Cannot delete old iAPP

I think this problem was caused by the NTLM profile object not getting associated with the application service that owns the folder where the profile lives.

If you have access to the tmsh command line, you could also fix this by running "mod ltm profile ntlm extranet_mysite_internal.app/extranet_mysite_internal_ntlm app-service extranet_mysite_internal.app/extranet_mysite_internal"