Haven't tested how reproducable this is.
Plan: Stack Wizard:Magic Affinity + Mysteria Annur: Refreshment
Result: Magic Affinity stops providing bonus conversion points
Level 9: 22/45xp
Conversion points: 20
Damage: 62 (69 -10%)
Physical Resist 65%
Stone skin: 5
Mana Potion x4
Health Potion x1
I took Extra Glyph power. At start it didn't seem to reduce conversion value on potions, nor did it cancel/reduce conversion bonus from Magic Affinity when checking potion conversion ratio (Drag and Hover over conversion to check, didn't actually convert a potion with only 1-2 glyphs)
I recycled a bunch of items already, only stopped once I realized I wasn't getting the right conversion ratios.
I grabbed refreshment after recycling a lot of non-glyph stuff, I think conversion was working prior but I wasn't looking for it specifically since I checked potion conversions at the start