Fix a WP import issue using wp-all-import for my .csv

I have a problem with a field imported into wp using WP-All-Import plugin. The custom attributes in the import plugin needs to be process via csv as an unserialized array in the postmeta table to show the way it needs to be but instead of it its going on as a simple text, how is it now. During the import, the Prices column that supposed to be taken into consideration in as array using the custom field, is going in as a whole string or a text instead of the formula: RoomType TotalRooms PrivateBathroom NightlyPrice,WeekendPrice,SinglePrice | RoomType TotalRooms PrivateBathroom NightlyPrice,WeekendPrice,SinglePrice | and so on, for multiple room types. [login to view URL] will become [login to view URL] ; It worked on the 1st import. On this 2nd one import, it does not work anymore: [login to view URL] , [login to view URL] ;