I had 2 Tattoo of Mana Burst(lvl 1) on inventory, one of then 5/180 and the other was 179/180. Then i went to upgrade the first one to lvl 2 to refill that, but there was only 1 choice and when i did it, the one with 179/180 got upgrade and the 5/180 still there.
I think the system is choosing for the first it finds on inventory, but would be nice to choose the small one.
It would be nice, but is it really worth to trouble them with such minor feature (which you can workaround in 30 seconds)? Maybe instead they will implement something more useful. :)
1x lvl2 tatoo is ~200k or less adena in all.
Cut ur veins!