A hotfix for ACDC 4.2 and 4.3 has been released.

Issue Fixed by Hotfix: [WAE-875] Attached Object Data Removed During Pipe Break Validation
For validation processes that included a pipe break check, an issue occurred that caused the previous attached object data to be removed from validated objects.  This can cause data conversion inconsistencies. A hotfix has been made available via the product download section of the Open Spatial Website.

Open Spatial recommend that this hotfix be applied as soon as possible to ensure data integrity.

The Open Spatial Support Team