I'm using CMSIMPORT Pro and have a strange problem here.
When executing a saved import definition manually with a .csv fil on my ftp-server it updates records as it's supposed to. However, when schedueling the same import-definition to update on hourly basis, it's adding records instead of updating...
That is very weird. I will look into it and let you know if it's either a bug or I need more info. I'm working on a new release now so if it's a bug it will be in that release. Hopefully this released this week.
Sorry for the delay I can't reproduce this issue. Would it be possible to send me the orginal datasource, the datasource you are uploading and screenshots of the wizardsteps? My email address is richard[at]soetemansoftware.nl