I've tried several times, but the watch list does not seem to be importing to BidSlammer. I did this yesterday and it worked, but I've added several more auctions to my watch list on Ebay - just can't seem to import them to BidSlammer.

Hello Rose,
Thank you for your question about importing items. Can you tell us how many items you have on your Watch List at eBay? Presently, I believe there is a limit of 200 items.

I have 138 items presently on my watch list. Is there a cutoff number for how many auctions we can import?

Hmmm.... I spent a while looking at the software code. Right now it is set to 200, i.e., we request 200 listings --- but that includes Watch List and Bidding List. We don't impose a date range.
Please try performing the import again from the Preferences page, but this time, leave the "Bidding List" box unchecked.
Your BidSlammer account only has 164 snipes total, so somewhere we are dropping 36 items. We prefer not to leave mysteries unsolved here :-) ... so please try that step above, and if it doesn't work, we can take the next step.