How to use Main Line on Item Fulfillments saved search? I've read an SA that Main Line does not work on IF saved search. I've tried Line Sequence No. Is 0 and didn't work as well. I just grouped them but as much as possible I don't want to group the results if there are any other solutions.

What do you mean by use Main Line?

Oh, I sent the not updated one. Please see revised above. Thanks, @Sandii

I don't get what the problem is, you can use mainline = T on an IF search.

Yes, I can use it but it doesn't work as intended. There's an SA that confirms this stating that IF saved search is an exception.

I just created a saved search with mainline and its working fine.