I have 2 Facebook accounts. I think it's pretty obvious that they're both linked to me.
On my main account, lately a lot of my ads have been getting disapproved. 60 ads were disapproved this week (for stupid reasons). I also have a warning on this account. It seems like I can't get anything approved anymore. Most of my ads are getting rejected even if they're clean. I just had 47 ads linking to a fan page get rejected. Facebook's reasons for not approving my ads make no sense either.. they think that I'm running weight loss ads when my ads have nothing to do with weight loss. lol.
I haven't actually advertised on my second account.. if I switch over to my second account and start running ads there will this erase the history that I have with my main account? I'd be using the same name and credit card?
I've had a similar situation some time ago and had no problem advertising on both accounts, but when one of the accouts was suspended the other one went down with it. My suggestion is to either leave the account with the warning for some time to rest and advertise in the other account, or change the niche for the next 50-100 ads (try gaming or something that they are ok with - you don't have to leave this ads running, it's important that they get approved).
When you switch to the new accout, change the creatives and the tracking site also, if you are using any.