Refmac (and dm and pirate and probably some other programs like phaser too) will only restore missing reflections if there are entries (albeit bblank ones) for those reflections in the MTZ file.

So it's not a matter of running uniquify before refmac, its a matter of running uniquify before you run *anything* - i,e. when you first create an mtz file.

If you are importing from another format using the 'Convert to MTZ' task in the GUI, this will be done for you unless you specifically turn it off. However it looks as though 'Truncate' task doesn't seem to do it by default - you have to click the button if you came in by this route.

Simon Kolstoe wrote:
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

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