adding extra client field

[2cool]

Hi, I added an extra client field called 'account' as a text field.
This way customers can add their additional account name.

It would nice to sort/filter on this field to view these account orders.

Is it possible to add this in backend, or export with csvi?
Did try an export already but field is empty.

Using Joomla! 3.9.5 + VirtueMart 3.4.2
Thanks,
Pas