Effect of updating CDTs on process model instances that use the updated CDT

Hi guys,
I have updated a CDT in my app and all old instaces of processes were afected by this update.
The CTD in all old instances of processes stayed with the simbol "^1"
Is this behave occurate ? is there a way to update the old instances without compromise the application ?

OriginalPostID-209900

OriginalPostID-209900

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