Caused by bugs in the past, umbrello may generate corrupted xmi files like shown with the attachment from bug 338983. Loading this xmi file results into an tree view item without any related diagram. Reproducible: Always Steps to Reproduce: 1. start umbrello 2. load xmi file from bug 338983 Actual Results: In the entity relation model folder there will be a diagram entry, which could not be displayed or deleted. Expected Results: There should not be such an incomplete state. While loading incomplete entries an empty diagram should be created.
Thank you for the bug report. As this report hasn't seen any changes in 5 years or more, we ask if you can please confirm that the issue still persists. If this bug is no longer persisting or relevant please change the status to resolved.