If you can post a pic of what you do would help.
You can freeze the tracks in an instance of Biab set to your song bpm then drag n drop the holds track into it then set the master base tempo to the tempo of the Holds.
Copy what you want then paste it into your other instance of Biab that has the UserTrack you can set it to snap or if you want the hold to play early don't use snap.

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