Curious, do you mean: if a task was part of project ABC, with an ID of ABC-123, then if someone moved it into project DEF, its ID is now changed to DEF-621, tho

Curious, do you mean: if a task was part of project ABC, with an ID of ABC-123, then if someone moved it into project DEF, its ID is now changed to DEF-621, those two should be linked, right?