After a while of trying stuff and looking around I was like, well you have to redo this work, so lest add the container tab back. I added a tab by adding a value to the array and the tab shown with all the elements still in it. Quite strange indeed.
After fixing up code and stuff I was back to where I was. I am no creating release versions often as kind of a safety net to fall back to as this is not the first time I have cmd-z’d had some stuff vanish and not come back with a cmd-shift-z