I was affected by this too and decided to try and move elsewhere to keep the old firm games.
Ended up with a move to MRS 2 Row C, I then get the confirmation email to tell me that they are restricted view - there was no mention of this when I added the seats to check out.
A bit gutted as I've sat in restricted view before and didn't like it.
I've emailed the club to see if I can be offered alternative seating but I doubt it.
Long story short, I wish I'd stuck with my seats and took the chance of being offered an old firm ticket.