Anyone have any suggestions about how to do this cleanly? Am I overlooking something that I should know about or should have thought of?
With the 856 URI display options in 1.6, we're having issues when a
library system purchases a batch of new online resources. If a record
already exists for a title, we'd like to simply bring in the required
856 tag(s) and add them to the record, keeping the existing tag(s)
unchanged. For a few it wouldn't be an issue, but when it comes down to
thousands of titles, it's more difficult to just update manually.
