We migrated from EmailXtender to SourceOne in the past.

Now we are restoring all data that has been shortcut.

We are able to restore all data except some leftovers (3000 approximately on a total of millions).

These have the strange message class of '.owa' inside. These are mail messages/send/receive reports/...

The SourceOne Restore task just ignores these items (no skipping or anythinig else can be found in the logs).

So probably these items have been archived in this message class/extension.

My question is: where and when are these .owa shortcuts created? I can't find anything about this in the Emailxtender nor the SourceOne documentation.