Describe the bug
The Insert and Extract buttons from Quark's Easy Tranfer feature don't show up in either backpacks or storage. The key commands to insert and extract items also don't work. This means we can't match items to store in the target inventory by shift clicking and hitting insert or extract and makes it harder to quickly manage inventories.

Screenshots

Vanilla inventory with Quark installed - Insert/extract buttons in bottom right under top inventory

Sophisticated Storage with Quark installed - no insert/extract buttons under inventory.

Sophisticated Storage with Quark installed

Versions
Sophisticated Backpacks 1.20.1-3.20.5.1039
Sophisticated Core 1.20.1-0.6.18.597
Sophisticated Storage-1.20.1-0.10.20.778
(Quark 4.0-439)

Yes they don't show up because they are disabled in Quark by default for custom inventories and would actually require reimplementation of this quark feature in sophisticated because default quark implementaiton would cause item loss / dupes with some of the sophisticated features.

I want to take a look at having this implementation again as I had in 1.18, but it will likely be just there by default even without Quark because anyway the whole thing had to be implemented on sophisticated side and the only thing that was used from Quark in 1.18 was the button look.

So I am going to change this to feature request for Quark like transfer in sophisticated.

oh that's interesting that in the old versions it wasn't actually quark doing it! I have been so used to the feature from playing so much VH in 1.18, so thanks for looking into re-implementing it in newer versions.

The advanced deposit upgrade with the match inventory contents is nice to help with transferring inventories, at least when going directly into the storage, so that helps in the mean time.