Bob - yes. There is documentation for an experiment AP which would have had a bullet that would take a magnet. I don’t know of anyone who has a specimen of this round though. I have a fair collection of Glisenti cartridges, and I have none with a magnetic bullet. I have one round I have classed as 9 mm Para, which has no headstamp, an “Italian look” and a magnetic bullet, but in my opinion, the bullet is not shaped right for an Italian Glisenti round.
In my first answer, I said that all pre-1946 Italian 9 mm with truncated bullets were Glisenti. That is not true. There is a round, * L B C * PARAB 9 headstamped cartridge with a CN Truncated bullet. I guess I did not think of that because it is headstamped with the caliber, and so is obvious. One I should have thought of is the rounds (not necessarily all of them, which muddies the waters) headstamped FIOCCHI 1918 with large lettering that were found in a Fiocchi box marked as 9 mm Para by a European collector, I think Peter Petrusic, although I could be wrong. They also have a truncated CN bullet. Except for the letter size, the headstamp is a typical Glisenti one, but we probably must go by the known box label.
There are also two rounds that I think are pre-War commercial, although it is not impossible that they are post war I guess, headstamped GFL Parabellum (obviously a bunter with another caliber designation removed, probably “7.65” which exists) and GFL Parabellum •9• also with CN truncated bullets. Again, I guess I didn’t think of those two because they have “Parabellum” headstamps. I should have included them in my first answer.
Sorry about that.