Goedermorgen, everyone,
I exported Customer V3 data entity, a standard data entity without any customizations, exported into XML Element format.
Now I have a problem with importing standard data entity Customer V3, the records do no go into staging table even, there is an error
"The data value violates integrity constraints.'

However file itself I just exported and have not done any changes, simple export - import - failed...
If i open file the record itself contains ValidFrom value assigned,

When I tried export\import to EXCEL format then Import works correctly updating the records\creating new records in other company.
But we need XML.
Anyone had any problems with UTCDateTime in XML? How to import date\time?