Exporting search results to a csv file - exported 0 results

I am trying to export the search results to a csv or excel file (or LDIF) file, it says it exported successfully, but that it exported 0 results.
Is this a limit of the trial version?
The search list contains about 6000 entries.

There is no export limit on the trial version.
Please check the export filter or try with the default filter (objectclass=*).

If you are using version 1.4.1 or 2.0, please upgrade to version 2.0 (Update 1).
In earlier versions the quick search (Top menu Search) and export were using the same filter, which are separated out
in the version 2.0 (Update 1).