Mtz File Export - not all external programs can fully work the Mtz files

Some external programs cannot fully work the exported Mtz Files and throwing errors regarding the sigma label like

CCP4: ERROR in sigma label/type

other programs just work fine

OPENED INPUT MTZ FILE
Logical Name: HKLIN   Filename: ./export.mtz
LABELS H K L IMean SIGI Frame
TYPES  H H H J Q R
XDATA   54.884   58.503   67.245  90.000  90.000  90.000   44.137   0.747    18  2.67000

with one and the same file. Apparently there is still some information / meta data missing which is needed for some programs/functionalities. This should be fixed and the Mtz files should be fully working with external programs