Dates are being exported from P6

Hi Everyone,

I am exporting a project from P6 to .xer and when I import the xer file to another planning tool (ACC), the start/finish dates does not appear.

I have the same .xer file to 2 of my colleagues, tried to import it in ACC and the same issue happened. However, when they imported that same .xer into their P6 and then exported back and than in ACC, the dates showed up.

We looked at the P6 settings but everything seems ok. Any thoughts what can be, is seems clear that the issues is from P6...