How to import new files from remote secure server

Hi  All,

I'm importing multiple files  with different structures  from a remote  server using PSFTP  ,execute   process task    into a local folder    and loading into staging tables

Right now I'm  importing  all files from the remote folder  to local folder and than loading new files  from my local server to staging tables

The remote folder holds the files for a week  and we import the files daily,how can we import only new files , the files at remote server  are  loaded on  any day with the  incremental extract , and the old and new files remain on the same folder for that week is there any better way of doing this

Many Thanks

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