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1. create new PropertiesDataObject named e.g. Foo 2. add new key into default locale 3. copy default locale node and paste it to the same parent (i.e Foo) -> new locale node will be created (named "1 - 1") 4. cut default locale node and paste it also to parent Foo Now Foo will be renamed to Foo_2 and InternalError will occurr.
Created attachment 1522 [details] stacktrace
Created attachment 1523 [details] stacktrace
Fixed in [main-trunk]. Next build available. Cut/paste to the same object is forbidden. InternalError is replaced by IllegalStateException.
Verified in dev [200210160100].
Resolved for 3.4.x or earlier, no new info since then -> closing.