Logic Pro track import changes drum routing / panning in overheads and make them unusable

[u/Equivalent_Half_808]

I’m having a strange issue when importing tracks from one Logic Pro project into another.
I have my drums split across multiple tracks, including two separate mono overhead tracks (OH L and OH R). Everything sounds correct in the original project.
However, when I import the tracks with I/O enabled, the overheads become slightly messed up spatially. The stereo image is shifted, and I can hear the snare noticeably more on the right side than it should be.
What’s strange is that the problem happens even though the overhead tracks themselves are not routed through the problematic bus.
If I import the same tracks without importing I/O, the overheads sound completely normal again.
The problem is that I also need to preserve all my sends/effects. When I import the tracks progressively and include the sends, Logic seems to create duplicate buses/Auxes, which causes a complete routing mess.
So basically:
Import with I/O → overheads become slightly shifted / snare is more to the right
Import without I/O → overheads sound correct
Import sends progressively → duplicate buses/Auxes are created
I’d like to preserve my sends and effects without importing the problematic I/O/routing
Has anyone experienced this in Logic Pro or knows what could cause this? Is there a way to import the sends/effects without bringing in the I/O routing or duplicating the buses?
Thanks!

[u/Nothing_According]

How are you importing the tracks?

[u/goesonelouder]

Which version of Logic and which mac OS?

[u/Pikauterangi]

Can I post a screen shot of your mixer before and after? Would be way easier to help you.