Opening AutoCAD Mechanical Files without losing weld symbols

Hello, we have used ACAD Mechanical for many years, and have recently transitioned to Draftsight. It seems that when opening our original drawings in Draftsight, the weld symbols do not appear and are removed from the file. Is there a way to fix this so that when opening assembly drawings/models originally created in ACAD Mechanical, we can still have our weld symbols in place?