I need to make some minor changes to an old site running C-Gate 1.5 on Windows 2000. It will involve adding some new PIRs, relays and DLTs. Assuming I configure them using a new TK on my laptop, will it be a problem for the legacy software to send group address changes to them via C-Gate 1.5? I don't see any reason why it would be a problem unless C-Gate fails to sync with devices too new for it to recognise.