Inks that clean ink stains in pens

I read somewhere years ago that Waterman Mysterious Blue cleans out the ink stains left by the notorious Noodler's Baystate Blue. Users would fill their pens with Mysterious Blue after finishing the last drop of BSB in their pens, with flushing in between of course. Haven't tried this myself but it sounds interesting. But is it true?

I found this old thread while searching for answers. Apparently, there are inks that clean out ink stains although they aren't marketed as such. Examples of these "cleaning inks" mentioned in the thread are Sailor Doyou, De Atramentis Black-Red, Monteverde inks with ITF, and Noodler's Rattler Red Eel.

If somebody would share from their experiences or any insight, that would be great.