The requirement is to read csv file from FTP folder for 'On Server' Data Migration. The file format should be dynamic name (file name concatenated with current date, for example PartMaster_&DATE.csv). But the 'On Server' migration is working with static file name format (PartMaster.csv) but not with dynamic name. 

IFS responded that R&D team has identified this as the expected behavior of the IFS Cloud applications and as of now it only allows to write data to a on-server file with the extensions.
The import functionality might be included in near future as an enhancement of the application.