Caps Man User issue

HI
I have a Client requirement where we are getting stuck .client already has caps man in place with 2000 users .

Client wants to update permission for internet from excel file after exporting it from Microtek user manager .

Is it possible to download and upload excel files from user manager in excel or .csv format , if yes suggest the steps required to do the same .

Have a look here : http://forum.mikrotik.com/t/export-user-list/56669/1