ghost Blocks

I bound (Bind>Insert) some xrefs so they became Blocks; they disappeared from the Xrefs dialog - good - I didn't need to Detach them. Then I Renamed them - but the old names persisted alonside the new names in the Rename dialog. In Purge the old names are also unpurgeable. If I QuickSelect Blocks by the old name, nothing is selected. Should I worry?

QSELECT doesn't always work well for me. If you like lisp routines, this one will let you know if there is a reference to that block in the file. You just need to change the line "PUT THE BLOCK NAME HERE" with your block name.

(defun c:findblock ( / acdoc )
 (setq acdoc (vla-get-activedocument (vlax-get-acad-object)))
 (vlax-for block (vla-get-blocks acdoc)
   (if
     (and
(eq :vlax-false (vla-get-islayout block))
(eq :vlax-false (vla-get-isxref   block))
)
     (vlax-for obj block
(if (vlax-property-available-p obj 'EffectiveName)
	 (if (eq (vla-get-EffectiveName obj) "PUT THE BLOCK NAME HERE")
	   (princ "\nBlock Found!\n") (princ "\nBlock Not Found!\n"))
  
  )
)      
     )
   )
 (vla-regen acdoc acallviewports)
 (princ)
 )