This was asked in an interview that if we are already having one Report definition in prod but now in Dev we add a declare index join in it and then redploy, will it still fetch the old records?before the change?
@TanyaS58 please check the below link for the answer. You need to run recreateindex— activity to populate old data.
https://support.pega.com/question/how-reindex-declare-index-table
@TanyaS58 please accept the solution if you have understood the solution.