I have a question regarding the design refresh/replace mechanism. Are XPages and Custom-Controls replicated?
In the Documentation they are not listed as component. However, in the confirmation dialog they are listed:
If not, how can I distribute XPages between different database?
Yes, XPages and Custom Controls are part of design refresh/replace mechanism. In general all design elements visible in Designer/Applications are part of it.
You are right, those design elements are not listed in documentation (neither in version 9) but should be.