将数据从常量附加文件分离到新文件中

I am using a macro to export a table in a Microsoft Access database to a csv file in order to import into a mysql database. I ended up using a batchfile that would place a marker in the text file before the exporting took place, and then place everything after the last marker into a new file. This works fine, except for the fact that access does not append, but will recreate the file each time, so it is impossible to use any kind of marker.I am using a macro to export a table in a Micro