# December 2025

> The export and import of re-training candidates across environments is now in public preview. This feature lets you gather candidates in production and bring them into development for model fine-tuning. For more details, refer to [Exporting and importing retraining candidates](https://docs.uipath.com/document-understanding/automation-cloud/latest/user-guide/retrain-models#%5Bpreview%5D-exporting-and-importing-retraining-candidates).

## General Release Notes - Document Understanding

### December 9, 2025

#### Exporting and importing retraining candidates in Public Preview

The export and import of re-training candidates across environments is now in public preview. This feature lets you gather candidates in production and bring them into development for model fine-tuning. For more details, refer to [Exporting and importing retraining candidates](https://docs.uipath.com/document-understanding/automation-cloud/latest/user-guide/retrain-models#%5Bpreview%5D-exporting-and-importing-retraining-candidates).

Additionally, we’ve extended the retention period for retraining candidates from 30 to 90 days, giving teams more flexibility when reviewing and retraining models.