Deleting pipes in CWS

Hi There,

I've created a project in CWS, it's a multi level site with 10 floors.

I added all floors, and drew the services on the first floor, it sized the pipes as I would have thought. I copied the services to the 2nd floor, but it didn't copy the system marker. I tried to add one and it can't find a pipe?

I went back to the first floor and now can't make alterations to the pipe system, I've tried deleting the pipe and size notes and group unfixing the pipes, none of this seems to help? I must be doing something really simple wrong but can'f for the life of me see what? 

Also I've used a special outlet with a loading unit of 25 and max flow rate of 0.5l/s however when the system is sized the flowrate on the one outlet goes up to 1.5l/s and in some instances 2.5l/s I can't see why as there is only one outlet on the leg?

Many Thanks

Wayne