I can see that the script loops through my records and captures the IDs starting from the first record. But my label preview shows them in reverse order! Have you seen this before?

That is the way it works: and all formats run that way. So your letters and labels will come out in the same order, though the opposite from the order you sent them in.

That seems like an odd design choice, but I guess we can work with it. Thanks for the quick response.

Update: in the "Create ... Foundset" scripts I just changed it to loop starting from the last record, and go to previous. Now works as expected.