I've completed Redanias Most Wanted and returned to Est Taiyar to continue the Cats Gear quest.
Through a combination of skill and bad luck I managed to make my way to the lower levels without the use of portals. I foolishly manually saved my game at this point as I thought it was quite the achievement to get that far.
After exploring a bit I have realised I have missed where I need to be for the Cat Silver Sword and I now seemed to be trapped without portals and my next most recent save is two (real time) days ago and the auto saves are all after the most recent manual save.
Is there anyway to reactivate the portals? Can I escape without them? Is the Gerald in that timeline now stuck in those ruins forever?