Some gals like to reinvent there personas from time to time for the same reason that any manufacturer or performer likes to update their product and image.  People like what is new and fresh rather than old and stale.

Some gals also update their services, such as going from FBSM to GFE, or from GFE to BDSM.

Doing some research is the best way to overcome fears that they may just be trying to bury an unsavory past.

Having done some research, I've noticed this occurring even from some well reviewed providers. Is this a red flag? Would appreciate some insight.

They charge X under one persona and charge Y under the other then deny doing doing it, then ultimately being forced to cop to it all due to all the peeps confronting her with overwhelming evidence.

They may also be running away from a stalker or they may go from being managed to becoming independent.

First thing that comes to my mind, is that she could have had trouble with a stalker, or have been 'outed' to people in her personal life. She'd need to change her name for safety reasons.  

for the things they do.  If you see profiles with 2 or more handles on it, admin has connected them to avoid multiple profiles of the same provider.  About the only way that will happen is if someone files a problem report alleging that 2 profiles are of same provider, and they can verify the allegation.  Sometimes they can, sometimes they can't, or won't, namely they don't agree with the prob report.  I have had that happen to me.

and come to think of it, we haven't heard from any of her three different personas for a while. Oh well, she'll be back. I can set a line on when if anyone is interested.lol

...so or else he doesn't have a clue how "TER finds out."  Maybe he thinks TER has a large staff solely devoted to combing the internet to find providers with separate names and profiles.

In reality, "TER finds out" thanks to hobbyists (and maybe some providers) who take the time to file problem reports in order to help their fellow hobbyists be fully informed and to keep the profiles accurate.

As someone that has months of free VIP from filing out those problem reports, I think I have it nailed down BP. But thanks for your concern about how things run around here.

The only time I've seen it is to because they moved to a new place and they're old bookers threatened their privacy

I believe it is often to re-brand and charge higher fees.  
In addition, I think that sometimes providers run into someone they know or is too close to their circles and so they have to change persona and screening strategy to avoid being outed.

I would sure worry about my neighbors knowing what I was up to.  There are some hard core religious types down there, but hey even good old Newt gave into temptation.