To reproduce:

• Import a task
• Assign termCollection and do termtagging
• Delete the assigned termCollection from languageResources
• Clone task

Associated error messages:

ERROR in editor.terminology.segmentediting: E1116 - Could not load TBX into TermTagger: TBX hash is empty.

Solution:

disallow TermCollection deletion if associated to a task.

Following up problems (also solved)

1. Import a task "A" with TBX
2. A term collection is created automatically to that task
3. Assign that auto created TC to another task "B"
4. Delete Task "B", the TC will be deleted even it was auto created for task "A".

Solution: the autoCreatedOnImport flag is set to false if the TermCollection is assigned to another task

Another problem: On deleting TermCollections the TBX data on the disk was not deleted.

Another problem: TermCollections createad via the filesystem importer were created with autoCreatedOnImport = true