What if they did restore to stock tune and it's not locked up. Will it mess up the custom tune if you go in and start changing parameters?

I acted dumb like I had no idea what they were talking about and it didnt come up again. Still not sure how they knew. I cant imagine they just randomly ask everybody. Plus I was getting service not warranty work so they had no reason to incriminate.

Not sure what would give them an idea to ask. There was nothing in the car that would of brought up any suspicion. I have already downloaded a new tune so I dont know what it showed as last recorded tune after I installed original back up.

2013 Dodge Charger R/T. Needed to take in to get serviced. Replaced original backup, so I thought. At least it said I was successful. Service later called and asked if knew there was a Diablosport Tune on the car? What did I miss or do wrong? Still under warranty, so I dont want to mess this up.