Posted on 06/01/2014 08:24:57
Hi Martin,
Are you using the Data Integration module, or the older import/export module?
It sounds like you are using the older import/export module - if you are, I recommend switching to the Data Integration module, since that is the one we are working on, going forward.
In Data Integration, you can mark columns as "do not import", or as inactive in the import activity - if you do this, those columns will be not be overwritten. Additionally, you have the option of marking "Delete missing" which will make sure that any items you do not include in the newest import file are removed from the database.
This is the solution we recommend, in this scenario.
I recommend looking at the documentation for the Data Integration module, found here:
http://developer.dynamicweb-cms.com/documentation/for-developers/data-integration.aspx
and possibly some of the integration demo videos, found here:
http://engage.dynamicweb.dk/Video-Library-1337.aspx?categoryfilter=erp
Regards,
Jonas Dam