[phenixbb] Difference Map positive peaks in release dev-798

[Yuri]

I was wondering if anything changed (weights or something) in the way 
the difference maps are calculated?
I just ran refinement on a 1.3 structure and a  hexacoordinated Mg2+ 
ion has significant positive density peak even at occupancy 1.0. I had 
not noticed that before.
My ligand also does have positive peaks, but refine gives it a .91 
occupancy.
I wonder if I am missing some parameter  cif file or some definition 
that would make the positive peaks decrease?

Thank you

-- 
Yuri Pompeu