Some maps being deleted?

[Joarry]

 Hey, i just wondered because 2 days ago i made lot of maps in the wmdb page, but the next day i find they were all gone. Is there any possible reasons to that? Maybe the fact that the last 9 or something maps were mine but because i actually had maps to upload, they were easy and for mole shopper, to be specific they were from music groups, maybe its not possible to do that?

Just that, i would like some help to understand this. Thanks!