Disclaimer: This post in no way endorses or suggests the use of Remote Views!!


>The target database is a 2.6 database.
>It does not have any key fields in it.


That is your problem. If there is no key, there is no way to locate a record. In the last tab, you need to identify what the key field(s) is(are).

And for course, you need to make sure the view is updateable.