I want to access Insert/update variables of Audit logs so as to maintain how many records got inserted or updated of particular schema which is part of import workflow.
insert and update count are maintained in event variable you can get them using below variable on next activity after update data activity.
vars.insertCount & vars.updateCount
It's a two step process
Step 1: Enable success and reject from update data activity(this will work for CRM export activity as well)
Use the following screen for the reference.
Step2: Use vars.recCount or vars.insertCount & vars.updateCount to get the count of records, you can use this variable to do what ever you want to use it for.
Example logInfo("successfully inserterd or updated records: "+vars.recCount);
Hope this helps!