All my Trailing Stops got deleted

Hello,

I've been using a demo account with IBKR to test swing trading for the past two months and things have been going fine.

I check my portfolio daily to track my positions, and noticed today that all 9 of my Trailing Stops were wiped this morning.

This is the first time this has happened, and I certainly did not do this myself as it removes critical risk management.

I always set them as GTC, and as mentioned, never had issues the past 2 months.

Why did this happen?