Nothing to be found in de D1 docs about needing to do selective imports if you'd like to overload those functions.
If I'd like to overload what functions? Some sample code to explain what you're on about would help.
(sorry for the late reply) http://www.digitalmars.com/d/2.0/hijack.html (part of) this also seems to apply to D1. from: http://www.digitalmars.com/d/archives/digitalmars/D/learn/enum_overloading_19868.html#N19875
I don't really see what the exact issue is here. Bug reports need to be specific.