Part with reference to assembly, but not showing in assembly.

Hey,

I recently opened up an assembly I was working on a two weeks ago, all the changes I made to the assembly, all the parts I added are completely missing, not showing in the assemblies references or anything, yet the parts are still saved in the file folder, and if I look at the references for each part, they say that they are referenced in the assembly.

Can anyone help please?

Kind regards

SolidworksAssemblies