Dear CCP4bb,
I was looking through the REFMAC manual today and found the following
advice:
"Completing the data to include all possible hkls. Should do this
after data reduction, and certainly before using REFMAC. This is now
done with the uniqueify script. It is best done using CCP4i."
http://www.ccp4.ac.uk/dist/html/refmac5/usage/examples.html#exam0
Is it a good idea to always run uniqueify on data before running
REFMAC - what about other refinement programs such as SHELX, CNS or
phenix.refine?
Simon