- I cleansed an item by mistake, and want my Corrupted version back.
- I accidentally purified item and would like to get the corruption bonus back
Choosing to cleanse a corrupted item is a permanent decision, and the cleansing window warns that corruption (and any benefits from it) will be permanently removed from the item.
Cleansed items can be re-corrupted using a Preserved Contaminant enhancement. Those are sold by M.O.T.H.E.R. in the Chamber of the Heart.