HI,
it depends whether all of them are having the Image or not, check that AP 205 also having the same Image as other IAPs.
The default behaviour of any IAP is, when we bring up by uplinking to the internet, it will try to contact Activate and gets a provisioning profile. profile will guide the IAP where it has to join.
I believe this behaviour is helping your IAP 205 to join some where.
Please feel free if you need some more clarity.
For your ref :