S.C.A.F Artifacts Bug on Chapter Four on Xbox

The Bug:

I collected all the SCAF artifacts in chapter four and the games says I didn't and when I go back to the locations where the artifacts are located the resources to replace them are there and not the artifacts.

When the Bug occured:

I believe it happened when I was playing co-op and I went to Pick up the S.C.A.F artifact outside the C.M.S Brusilov and My partner picked it up before I did.

What Happened before the bug:

I was going around collecting artifacts in chapter four and I arrived at the location to get the Brusilov SCAF artifact and I collected the resources and killed the nercomorph then went after the artifact. It may have happen at the other Two locations to collect SCAF artifacts in chapter four but I'm not for sure.(I was playing alone when I collected the other two)

What Expected to happen:

To done collecting SCAF artifacts in chapter 4.