Barcodes created in X4 cannot be edited in X6 and vice versa

Has anyone else come accross a problem where a barcode created using the barcode generator in X4 cannot be edited in X6. Also if you create a file in X6 add a barcode and then save it as an X4 file, you still cannot edit the barcode in X4.

 

We have some machines using X4 and some using X6 so this is a real pain