Test Data Transfer Tool - TDTT is unable to transfer memo fields

we recently had problems transfering test data from a test to a dev environment using the test data transfer tool. After some research we figured out that the problem occurs when transfering tables that contain memo fields.

the error log is always showing the following BCP Error: "Warning: BCP Import with a format file will convert empty strings in delimited columns to NULL"

Error = [Microsoft][SQL Server Native Client 11.0] Warnung: Beim BCP-Import mit einer Formatdatei werden leere Zeichenfolgen in durch Trennzeichen getrennten Spalten in NULL konvertiert.
After some discussions with Microsoft the actual Statement is that TDTT is still beta and right now it is not supported to transfer tables with Memo fields containing NULL Values.

So we transfered These tables manually with some SQL commands and requested MS to add this functionality in the final Version of the Test Data Transfer Tool.

Please vote for this request on the connect platform:  https://connect.microsoft.com/dynamicssuggestions/feedbackdetail/view/957734