Reference Image Library not working at all

I have recently updated to Unity 2021.3.24f1. I am using ARFoundation and have not had any similar problems til now.
I tried adding a new image to track and a new object to place over it, but this did not work. On the contrary the object I placed in spawned on a previous image in my reference image folder. When I tried removing this image, it would still track it…
I also tried swapping image names, so that 2 objects that would spawn on them would be swapped, but this did not occur, they still spawned on their respective images.
It seems that my reference image library has frozen on tracking the 3 images I had in it before the update, and adding any new images bugs it out.
Does anyone have any idea on what could be causing this?

Did you set your new library as the AR Tracked Image Manger’s Serialized Library? AR Tracked Image Manager component | AR Foundation | 5.0.7