Bc2000 (for the BCF2000 & BCR2000)

I've seen around that you can overwrite the function buttons on the
BCR-2000.  I'm wondering if this can be done on a per preset basis. 
As in, if I use those for sending CCs in preset 10, will they still
operate as function buttons in preset 11 and others? I'm too chicken
to just do it.

Thanks,
Will