When the links in the master sheet break, you can create a VBA macro to change the links back to the current folder.
Sub UpdateLinks()
    Dim wb As Workbook
    Set wb = ThisWorkbook
    Dim lnk As Variant
    For Each lnk In wb.LinkSources(xlExcelLinks)
        wb.ChangeLink Name:=lnk, NewName:=Replace(lnk, "Roaming", "Existing")
    Next lnk
End Sub