We are running the Direwolf20 1.10 modpack (version 1.6.1) and while playing figured out that the equipped bagpack doesn't go into the grave (nor gets dropped as an item, both cases with an empty player-inventory).

It simply disappears. This seemingly was adressed in #40 already, but somehow it managed to come back.

The IronBackpacks mod version is: 1.10.2-2.2.22
The gravestones mod version is: 1.5.12

I think this should work. I tested it with all the combinations I could think of (equipped with eternityUpgrade/keepInventoryTrue/neither), and they all seemed to work just fine as-is.

I'm using IB v2.2.22 and this gravestones mod v.1.4.9. Try updating and testing again. If you still get that issue please repost here with more detail and I'll reopen the issue and try and fix it.

Thanks!