edit mast need for funny looking 000000

I have a date field that mostly the dates are fine in this format:>  04/12/2013, this date is customer last orderdate, so it can be zeros.

but some are zeros but they display as this: '//0.0'  if such a case, how can I mask to 000000 or even just blanks?the field gets edited in this formula: because all dates on our systems are YYYYMMDD

Mid (CStr ({GLB1X.ACLORD}),6 ,1 )&  Mid (CStr ({GLB1X.ACLORD}),8 ,1 )&

"/" &

Mid (CStr ({GLB1X.ACLORD}),9 ,2 ) &

"/" &

Mid (CStr ({GLB1X.ACLORD}),1 ,2 )&  Mid (CStr ({GLB1X.ACLORD}),4 ,2 )