i know i know i know... for me.. right or wrong... this is what i do.. first off..i HATE the alpha numbering. so when Panini publishes a CL.. i start creating my own (from the MFR) then i start to scrub the net - mostly Ebay for sales and get the card #'s off of there and incorporate it into the CL then upload the list as a whole, complete.
Unfort... sometimes that is impossible because of the mass of redemeption cards or low SN cards that prob won't be posted for quite sometime. So, yes, i have failed the task in that area of CL, and uploaded some with just the beckett numbering.. 1,2,3,4, etc and try to go back later (if i remember) and insert some of the actual card #'s..
in other cases, i have uploaded a mix of it.. if a 30 card set was issued and i found 10 actual numbers, i submitted the CL with both.. ten cards with actual card #'s, and 20 with Beckett numbering IE: Card 1 Player A, Card 2 AA-BBB Player B, and so on,, sloppy ? yes, probably, but its something that probably won't be completed or posted somewhere for quite sometime. at least its a start for someone else in the future to work off if they happen to get a card in that set or to work on if they have the info.