Import to update CRM records using Contact.contactid

Hello,

I have isolated contact records which I need to update in CRM. Because CRM Views are so limited I had to isolate these records via an SQL query on the Filtered Views. This has given me the contactid of the records I wish to update.

My question is, how can I use this id to do an update/import back in to CRM?

Any help greatly appreciated!

Thanks,

- Seamus