Olet on Existing Header

Does anyone have a procedure for getting an olet tie in to an existing header of a different line number to iso properly with continuations and reference coordinates?

I've tried several scenarios using different combinations of line numbering on both sides, with/without weld, isogen continuation graphics counts, and can't get an iso with a new olet tying into an existing header (shown dotted) showing the continuation callout to the existing header line number and a coordinate.

What I have done is make the existing pipe that the olet is on the same line number and then drop the iso. Depending on how many extra fittings you have you might have 2 callouts with the existing line number. you just have to delete one of them.

Make the header the same line number as the olet. Set it as existing and dotted undimensioned. Add a 2nd short pipe to the header with the continuation line number.