when you put a quiver from supplementaries into the matrix enchanter, the arrows are cleared from it.

I am using supplementaries-1.18.2-1.5.16, Quark-3.2-358 and forge version 40.2.1

I cannot send the logs as pastebin crashes when I try to paste them

I can't replicate this. Tried on a server and single players. Quiver data is a forge capability and should persist for the entirety of the itemstack life so idk why it would fail. Seems like a mod conflict