I am importing .STEP files of PCB assemblies from Altium Designer. Every import generates component file names by designator name, i.e. "board", "V1", "R2" etc. Every Board design uses several common designators so if I want to put two PCBs in the same assembly, there will be several components with the same file name. SW will not open each unique file, rather it uses the file already opened with the same name; even if the source folder is different.

How can I make SW open each unique document separately, despite having the same file name?