[phenixbb] No clash evaluation between symmetry mates in phenix.refine

Dear Phenix developers, I have a question about phenix.refine. I'm refining complex structure against X-ray diffraction data with packing disorder. (Some domains overlap with their symmetry mates (4-fold), so their occupancies are set to 0.25) So I want phenix.refine to ignore clashes between symmetry mates. Can phenix.refine exclude any interaction between symmetry mates from geometric term in target function: E = E(x-ray) + E(geometry)? Is there any option? Thank you very much in advance, K. Yamashita