Dangling items in external references

So I Modified my base part, and now when I go to update the assembly it says I have a "dangling" ref.

After reading I have discovered that the change I made is the cause of this. Is there a way for me to re insert or reconnect the ref so I do not have to redo all of the work that was done after I split the bodies and saved them out as seperate parts.

Chevis W.

SolidworksGeneral