Some more info
You can edit items when character is online. Just put the item you want in storage close it then edit it once you edit it teleport before you re-open storage and then its done. Other wise it will revert back if you dont teleport.
To make items higher then +12 in SMC
"Thanks to Portal Dark for guide"
Modify three stored procedures
SMC_ADD_ITEM
SMC_EDIT_ITEM
SMC_DEL_ITEM
Find
Code:
if (@OptLvl < 0)
set @OptLvl = 0
else if (@OptLvl > 12)
set @OptLvl = 12
and replace the 12 with 250
This will allow you to create items past 12 but only in SMC not in game.
And for character with [GM] in name you can either change name in DB while offline make changes then change it back in DB. Or just create a dummy char on account name it "smcedit" and use it to select the storage.