We are planning to fill history data for PI tags from one server(1) to another server(2). The catch is that the destination server(2) only has tags of the source server(1) as a subset of tags. Please help us in knowing the best practice as PI to PI backfilling will take a lot of time to fill that data. We have thought of doing it by merging archives but we are not sure of it as recently when we were testing it, lead to archive corruption. (Also, the point ids for the tags on both servers are not same).