Updating Delimited Text Info

[TheFerrisFile]

Hello,

I have several databases that are linked together by the same tables (due to the size of the database). Every quarter we recieve more pipeline delimited text files that need to be imported into the tables. Thankfully, these are seperated by New data and Changed data. My question is, what is the easiest way to import the Changed data and update the current data that is already in the tables?

Thanks