What happens if OpenProject (converted to semantic identifiers) and JIRA share the same project identifier? How/where do we handle that conflict?

Begin of the insertion**Initial idea:**

End of the insertion Begin of the deletion Initial idea:End of the deletion Have the JIRA Begin of the insertionImport ToolEnd of the insertion Begin of the deletion migratorEnd of the deletion detect conflicts and Begin of the insertionshow them before confirming their import. It really depends on a case by case situation what the migrating user prefers.

Sometimes the Jira project holds more value than the existing OpenProject. Then, the importing user would chose to move OpenProject's projectEnd of the insertion Begin of the deletion errorEnd of the deletion out Begin of the insertionof the way, first. So that the history of the Jira project is kept intact. 

Or the OpenProject project holds more value. Then a solution would be to first rename the projectEnd of the insertion on Begin of the insertionthe Jira side, first, so that it can be imported without conflicts.

End of the insertion Begin of the deletion them. 
End of the deletion In Begin of the insertionany caseEnd of the insertion Begin of the deletion further iterations,End of the deletion we Begin of the insertionprobably should never import historic identifiers from Jira that collide with current or historic identifiers in OpenProject. We probably need to accept the loss.

What weEnd of the insertion could Begin of the insertionconsider, though, isEnd of the insertion Begin of the deletion offer some waysEnd of the deletion to Begin of the insertionaddEnd of the insertion Begin of the deletion reconcile this automatically. 
The conflicts should likely be detected _before_End of the deletion the Begin of the insertionJira's historic identifiers as searchable stringsEnd of the insertion Begin of the deletion instance gets convertedEnd of the deletion to Begin of the insertionthe imported objects. So that when we search in OpenProject for an identifier, e.g. with the `typeahead` filter, then it could find multiple results, instead of clearly only one.End of the insertion Begin of the deletion semantic identifiers.End of the deletion