Index Mutation Issue

Hi,

Currently I have around 1bio docs in my bucket, but total mutation is 7G during create new index

I see in doc metadata, there’s revision info.
I do POC, when I update 1 document mutiple times, data node will keep all of the revision and being included inside mutation.
I’ve tried doing compaction, but total mutation still have those revisions for 1 doc.

How to remove that revisions from mutation?
I assume if I can remove those revisions data, my mutation for 1 bio doc only 1G
CMIIW

Thanks,