--- title: "K1x Release: K1 Aggregator - 04/21/2026" description: 4-21-2026 K1 Aggregator Release Note --- [Skip to content](https://support.k1x.io/k1x-release-k1-aggregator-04/21/2026#main-content) [Submit A Support Ticket](https://support.k1x.io/kb-tickets/new?hsLang=en-us) [Client portal](https://support.k1x.io/tickets?hsLang=en-us) [![Group 16](https://support.k1x.io/hs-fs/hubfs/Group%2016.png?width=75&height=75&name=Group%2016.png)](https://support.k1x.io/?hsLang=en-us) - [Knowledge Base](https://support.k1x.io/) Open main navigation Close main navigation - [Knowledge Base](https://support.k1x.io/) - [Submit A Support Ticket](https://support.k1x.io/kb-tickets/new) - [Client portal](https://support.k1x.io/tickets) How can we help? - There are no suggestions because the search field is empty. 1. [K1x Knowledge Base](https://support.k1x.io/?hsLang=en-us) 2. [General](https://support.k1x.io/general?hsLang=en-us) 3. [Release Notes](https://support.k1x.io/general?hsLang=en-us#release-notes) April 21, 2026 # K1x Release: K1 Aggregator - 04/21/2026 ## Check out the following changes that have been introduced as part of this K1x release. **K1 Aggregator - Release Notes** **What Changed** - **State K-1 Modifications** — Resurfaced and redesigned the Modifications UI to include a dropdown menu for modification additions. **Fixes (Bugs / Stability)** **Federal Forms** - **Form 8865** — Fixed UI issues where transferee information (Name, Address, EIN, Reference #, Country) was not flowing to the correct form lines (G1, G2(a), G2(b), Line 3) when adding a new 8865. - **Form 926 / Form 5471** — Fixed an issue where selecting the Form 926 or Form 5471 checkbox in Foreign Disclosure Forms auto-selected the same checkbox for all rows sharing the same Transferee Name. Checkboxes now apply only to the selected row. - **1099 Gain Loss Statement** — Fixed an issue where edits and new lines added to the 1099 Gain Loss (1099-B) grid were not saving. **CCH Integration** - **CCH State Data** — Fixed an issue where state data did not populate in CCH after a successful integration. - **CCH 199A / QBI Sync** — Fixed an issue where syncing 199A data to CCH generated excessive autoflow warnings and created extra blank QBI records. Unnecessary warnings are now suppressed and blank QBI columns are no longer generated. **Reports & Exports** - **K-1 Line Item Summary Export** — Fixed a SQL truncation error that caused the Excel export to fail for investments with long tag lists. - **K-1 Income/Expense Summary** — Fixed incorrect row ordering when selecting to include line item details in the report. **API** - **K1x API** — Fixed an issue where TaxYear was missing from the JSON response under the Summary section. **Investment Import** - **Investment Import** — Fixed a false "Successful Upload" notification that appeared when importing investments from Excel with missing required information. The system now correctly reports the import failure. - [General](https://support.k1x.io/general?hsLang=en-us#main-content) - [Account Management - SSO & Okta](https://support.k1x.io/general?hsLang=en-us#account-management-sso-okta) - [FAQ](https://support.k1x.io/general?hsLang=en-us#faq) - [Release Notes](https://support.k1x.io/general?hsLang=en-us#release-notes) - [K1 Aggregator](https://support.k1x.io/k1-aggregator?hsLang=en-us#main-content) - [Getting Started & Administration](https://support.k1x.io/k1-aggregator?hsLang=en-us#getting-started-administration) - [Core Workflows](https://support.k1x.io/k1-aggregator?hsLang=en-us#core-workflows) - [Reader Extraction & Document Upload](https://support.k1x.io/k1-aggregator?hsLang=en-us#reader-extraction-document-upload) - [Aggregator Modules - Investments](https://support.k1x.io/k1-aggregator?hsLang=en-us#aggregator-modules-investments) - [Aggregator Modules - Foreign Forms](https://support.k1x.io/k1-aggregator?hsLang=en-us#aggregator-modules-foreign-forms) - [Aggregator Modules - Reports and Exports](https://support.k1x.io/k1-aggregator?hsLang=en-us#aggregator-modules-reports-and-exports) - [K-1 Aggregator FAQ](https://support.k1x.io/k1-aggregator?hsLang=en-us#k-1-aggregator-faq) - [Integrations - CCH Axcess](https://support.k1x.io/k1-aggregator?hsLang=en-us#integrations-cch-axcess) - [Integrations - GoSystem](https://support.k1x.io/k1-aggregator?hsLang=en-us#integrations-gosystem) - [Integrations - UltraTax, Profx, OIT](https://support.k1x.io/k1-aggregator?hsLang=en-us#integrations-ultratax-profx-oit) - [Integrations - All Other](https://support.k1x.io/k1-aggregator?hsLang=en-us#integrations-all-other) - [990 Tracker](https://support.k1x.io/990-tracker?hsLang=en-us#main-content) - [990 Tracker FAQ](https://support.k1x.io/990-tracker?hsLang=en-us#990-tracker-faq) - [Federal Forms](https://support.k1x.io/990-tracker?hsLang=en-us#federal-forms) - [Federal Forms - 990-T](https://support.k1x.io/990-tracker?hsLang=en-us#federal-forms-990-t) - [Federal Forms - Form 990](https://support.k1x.io/990-tracker?hsLang=en-us#federal-forms-form-990) - [Federal Forms - Form 990 - Form 990 Schedules - Schedule A](https://support.k1x.io/990-tracker?hsLang=en-us#federal-forms-form-990-form-990-schedules-schedule-a) - [Federal Forms - Form 990 - Form 990 Schedules - Schedule B](https://support.k1x.io/990-tracker?hsLang=en-us#federal-forms-form-990-form-990-schedules-schedule-b) - [Federal Forms - Form 990 - Form 990 Schedules - Schedule C](https://support.k1x.io/990-tracker?hsLang=en-us#federal-forms-form-990-form-990-schedules-schedule-c) - [Federal Forms - Form 990 - Form 990 Schedules - Schedule D](https://support.k1x.io/990-tracker?hsLang=en-us#federal-forms-form-990-form-990-schedules-schedule-d) - [Federal Forms - Form 990 - Form 990 Schedules - Schedule K](https://support.k1x.io/990-tracker?hsLang=en-us#federal-forms-form-990-form-990-schedules-schedule-k) - [Federal Forms - Form 990 - Form 990 Schedules - Schedule R](https://support.k1x.io/990-tracker?hsLang=en-us#federal-forms-form-990-form-990-schedules-schedule-r) - [Federal Forms - Form 990 EZ](https://support.k1x.io/990-tracker?hsLang=en-us#federal-forms-form-990-ez) - [Federal Forms - Form 990 PF](https://support.k1x.io/990-tracker?hsLang=en-us#federal-forms-form-990-pf) - [Federal Forms - Other Federal Forms](https://support.k1x.io/990-tracker?hsLang=en-us#federal-forms-other-federal-forms) - [Electronic Filing](https://support.k1x.io/990-tracker?hsLang=en-us#electronic-filing) - [Modules](https://support.k1x.io/990-tracker?hsLang=en-us#modules) - [Modules - Conflict of Interest](https://support.k1x.io/990-tracker?hsLang=en-us#modules-conflict-of-interest) - [Modules - Master Compensation Module](https://support.k1x.io/990-tracker?hsLang=en-us#modules-master-compensation-module) - [State Forms](https://support.k1x.io/990-tracker?hsLang=en-us#state-forms) - [State Forms - Arizona](https://support.k1x.io/990-tracker?hsLang=en-us#state-forms-arizona) - [State Forms - Massachussets](https://support.k1x.io/990-tracker?hsLang=en-us#state-forms-massachussets) - [State Forms - Mississippi](https://support.k1x.io/990-tracker?hsLang=en-us#state-forms-mississippi) - [State Forms - New Mexico](https://support.k1x.io/990-tracker?hsLang=en-us#state-forms-new-mexico) - [State Forms - West Virginia](https://support.k1x.io/990-tracker?hsLang=en-us#state-forms-west-virginia) - [Troubleshooting](https://support.k1x.io/990-tracker?hsLang=en-us#troubleshooting) - [Troubleshooting - Federal](https://support.k1x.io/990-tracker?hsLang=en-us#troubleshooting-federal) - [Troubleshooting - Federal - Validation Errors](https://support.k1x.io/990-tracker?hsLang=en-us#troubleshooting-federal-validation-errors) - [Troubleshooting - Federal - Validation Errors - Form 990](https://support.k1x.io/990-tracker?hsLang=en-us#troubleshooting-federal-validation-errors-form-990) - [Troubleshooting - Federal - Validation Errors - Form 990-T](https://support.k1x.io/990-tracker?hsLang=en-us#troubleshooting-federal-validation-errors-form-990-t) - [Troubleshooting - Federal - Validation Errors - Form 990-PF](https://support.k1x.io/990-tracker?hsLang=en-us#troubleshooting-federal-validation-errors-form-990-pf) - [Troubleshooting - Federal - Validation Errors - Other Federal Forms](https://support.k1x.io/990-tracker?hsLang=en-us#troubleshooting-federal-validation-errors-other-federal-forms) - [Troubleshooting - Federal - Rejection Errors - Form 990](https://support.k1x.io/990-tracker?hsLang=en-us#troubleshooting-federal-rejection-errors-form-990) - [Troubleshooting - Federal - Rejection Errors - Form 990-T](https://support.k1x.io/990-tracker?hsLang=en-us#troubleshooting-federal-rejection-errors-form-990-t) - [Troubleshooting - Federal - Rejection Errors - Form 990-PF](https://support.k1x.io/990-tracker?hsLang=en-us#troubleshooting-federal-rejection-errors-form-990-pf) - [Troubleshooting - Federal - Rejection Errors - Other Federal Forms](https://support.k1x.io/990-tracker?hsLang=en-us#troubleshooting-federal-rejection-errors-other-federal-forms) - [Troubleshooting - State - Validation Errors](https://support.k1x.io/990-tracker?hsLang=en-us#troubleshooting-state-validation-errors) - 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