Resource References Lost When Project Closed?

Every single time I re-open my project, my bulletBP, which references decals, niagara systems, etc, doesn’t actually seem to use those references until I re-save the asset. So, no sound, no bullet trail, etc, but I’ll go and save without changing anything and it works again as long as the project is open. I’ve fixed re-directors multiple times and it hasn’t resolved the issue.

Anyone know why it would be doing this/what to do about it?