Congratulations on wiping out half of the RoboRumble
No worries, the pairings should still be there, just hidden, for the next 14 days. All bots need 1 battle again, and then each will need another battle once all the bots are all back in the rumble to reprocess their results. This should be fixed fairly quickly.
Once its stable again I'll do another backup, since it's been quite a while...
This time it looks that only the newly added bots get correct pairings, e.g. 1189, 1188, 1187, but the bots added early has 400 pairings, and goes to 401 once it receives one more battle. So does it take ~1000000 battles to fix this time?