The Sibelius Forum

I need to reuse/apply a complex/custom drum map in ~300 projects (Sibelius Ultimate current version). I've followed p.416 of the manual and created a custom drum map, added to 'Common Instruments', etc.. This works fine *for the current open project*. What I'm finding is when I open the next project my custom drum map is nowhere to be found. This is a pretty fundamental capability so I assume I'm doing something wrong. I'm hoping the community can help me get straightened out. As this is almost the only reason I bought Sibelius I'm hoping I didn't just throw a chunk of money away.
Thanks for any input.