Its a Data exported files (same format) from DM step (export data).
I need some help in writing a rule to merge these 2 files into single file
I see, thanks! Just throwing in a suggestion here, since you will be using a business rule, why not creating a single export file right in that rule rather than relying on the DM steps to create two files first just to merge them later on?
aformenti and FredLucas provided some great snippets here:
Solved: Export data using a Method Query - OneStream Community (onestreamsoftware.com)
