In D7.59 I have to import .csv file and there are all the mappings prepared for that. The file has 500 records, that will become nodes of a content type "record". There are no nodes of this content type in Drupal before the import (all nodes are deleted). When I start the import after it finishes I get the result, that 334 nodes were created and 266 nodes were updated.
Log does not show any errors by the way.
I presume that there are some kind of feeds cache that has to be cleared, to make sure that it does not think that some of the nodes are still in the site. Can someone tell me what SQL tables I should truncate, or maybe there is another way to solving this?