[EpiData-list] Difficulty in Importing Relational database of Classical epidata into Epidata Manager

Dear Jens,                    I am trying to import Classical Epidata Relational File System of 8 tables into Epidata EntryClient.The structure is as follows;                 Family                                                Eligible Couple                                                                                                  Pregnant                                                                        Contra           Under five                             Agesex                                                                                                                Growth Monitoring                                                                            Tuberculosis                                     We  can import Family,  Eligible couple AgeSex and tuberculosis structure data files easily and link also .However the files linked to eligible couple ; Pregnant , Contra , Under five and Growth monitoring , only the structure of the file is imported, NOT DATA.  When we click the data check button in the Import Dialogue Box, it shows the following error .“Importing data is only impossible when the imported dataset has same variable (names +type) as  the defined variables!”That is already the case. The primary key between family and other  directly linked files is “FFNO” , a text variable . The primary key between Ecouple  and linked files is “FAMIDNUM”  a numeric  variable.  The primary key between Underfive and Growth monitoring files  is “Card2” , a numeric variable .  The number of records are in thousands.I am using the latest version of Epidata Manager and EntryClient.Why we are not able to import the data of Pregnant , contra , Under five and Growth monitoring files. Please guideDr. Shavinder Singh