Adding existing key figure to SNP aggregate

Hello All

Need expert advise, requirement to add a existing SNP standard key figure to a SNP aggregate, system is SCM 7 for report extraction.

Specific Key figure missing in a 9AMALORE extract but available in other SNP aggregate

are there any specific precaution to be followed while doing it?

Does change impact data? or update data source only?

Appreciate advise

Thank you

Vijay