I have the same issue. We have configured ACL on each named server and are working with acl (allow transfer acl1,acl2,....)
This stopped now working because the input is checked and now only ip-adresses are accepted.
Could this please be changed? Nobody can remember the addresses (some acl have more than 5 addresses). We have to edit ANY zone to get this again working.
With ACL we only need to change the acl on the dns servers, which are usually less systems.
As feature request it would be nice to configure the acl centrally on the ispconfig-server.