Hello,
Same problem with a Win7 x64 in English language but Spanish Format in Region and Language (for dates, numbers, etc). The import function does not read the floating point numbers properly.
In fact, if you export and reimport (not doing anything in between) the floating points in the UDT (not default ones) are multiplied by 10 every time yo do the export/import cycle.
In the xml I used a comma instead a point and it worked but you have to do this replace task every time before importing.
Thanks.
Fran.