If I have a catalog entry that has does not have a URL entry but does have a DOI and PMID entry, and I click the search on the blank DOI entry, it will add the URL for that entry. However, if I then click on the search on the PMID, it will find that and over write the URL obtained by the DOI entry (The reverse is also true). If I want both URL entries, then I have to once again click on the search for the original one to get them both to survive.
The second click should not over write the URL obtained by the first click.
=Marco
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