We have an application that has long process flows built on 6.7.1. I have a CD

We have an application that has long process flows built on 6.7.1. I have a CDT Cars that we are looking to update. I noticed in some places we do union(pv!ProcessVariable, rule!queryrule).

Testing this function breaks when I update the cdt for process instances because it is trying to merge pv!ProcessVariable which is type Cars^1 with the results of rule!queryrule which is type Cars.

Is there a way I can rectify this easily for active process instances? Is there a recommended best practice we should follow for array merging of CDTs to prevent breaking them accounting for the possibility of changes to the CDT structure?
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OriginalPostID-98016

OriginalPostID-98016