When re-assigning a Custom fermentable in a recipe to be one now on Inventory - because it has a price now - the only way to do it is to delete it after first adding a new record. Any attempt to select from the Inventory fails as you only get the option of the general Catalog. When trying to do this selection however - by clicking away out of the field - has the original Fermentable name replaced by the first entry of the Catalog - the only redress (if you can't remember what the malt was) is to quit editing and start again. Custom entries were there to get round entries not in the General Catalog or local Inventory. Now you have it in the inventory it would make sense to be able to select it even if the respective PPG values etc are the same. Not a big deal just extra work if you have to reassign lots of entries in a lot of old recipes.