We are using those 169er adresses as our internal RAP pool.
Normally we use Activate. There i can see, that the RAP is in the correct group and should get the new cluster IP.
Licenses are plenty available and i have already checked the whitelist.
I can see the AP for our short time in the new cluster, then after the image upgrade it jumps back to the old cluster. New devices can be connected to the new cluster without problems.