If your placed objects have been replaced with a blue dot, it means the library is no longer linked to the project.
Look under FILE>LIBRARY MANAGER......is the library you have been using shown there? If not, relink it to the project.
David
AC 19-26 Windows 10 64 bit, Dell Prercision 7820, Xeon Silver 2414R ( 12 Cores), 64 GB Ram, Quadro RTX 4000 8GB