Cannot Export token fields when exporting answers

Hello,
i'm using version 2.73.1. Wanted to do a test exporting answers. All works ok until i choose some token field to get included. I expect the token fields to be shown at the beginning of the line of the connected answers but there's nothing there.
This doesn't work for any of the possible formats (CSV, XLSX, HTML, PDF..)

The survey is NOT anonymous.

Did i something wrong? Please let me know if you need further info.

Thanks,

Ok, we found out that the survey has so many questions/answers that it doesn't export all the data.
If we choose a smaller range of questions, we also see token fields we selected.
It looks like there's a limit of exportable fields (about 1000).
So then we found out:

manual.limesurvey.org/Troubleshooting#Wh...not_all_are_exported

So we solved.
thanks,