Putting a higher quality item into a memory unit clears the quality on the stored item.

Given Quality compatibility is experimental with SE currently, I'd understand it not being tested much. Also could be accepted as flavor - storing bulk quantities by converting them to energy loses quality for various technobabble reasons!

Still, if its not to be fixed, a warning it will reset quality would be nice. I suppose that means they currently work as very expensive quality reset options, too, hmm.

The current version is a heavily modified fork of the 1.1 Memory Storage, so I kind of inherited their non-caring about quality. I was under the impression that SE would block attempts to introduce quality, so I didn't really try to make it work myself.
I will take a look how much I would need to change to accommodate preserving quality.