Hi, we have an old uPVC door that will get replaced in the next year or so but in the meantime we would like to change the lock to the type where when the door is shut it requires a key a reopen (sorry but I don't know the short name for this type of lock). We would also like it to be openable by code, mechanical key press would be fine. Looking around it seems it seems there is a problem with my requirement due to the 'lift to lock' feature on most uPVC doors. Anyone tried this or able to provide any insight please? Thanks.