Specification Upload using DAT

I am facing few issues while uploading DAT file for Property Tree.

1. I deleted all old characteristics for property and tried re-importing, how ever while re-importing it is not accepting

ANZST                          1

ANZDZ

values as Number of Chars and decimals from DAT file. It keeps the old data only.

2. Also it says unit of measurement mm does not exists , however there is such a unit of measurement

and if i try CT04 it accepts mm.

Any suggestions welcome

Thanks and regards