I was missing some sweeps too (other than the magazine ones). I went to the master list of dailys and sorted them according to sweepscheck date decending. I found almost 2 dozen that way. I did this today after I had entered so I passed by anything that had the entry date on 1-17 and started looking for those with an entry date on 1-16 and before.
Thanks so much for posting this! I was able to get most of my gift card sweeps added back in and it didn't take very long either!