You do have the option in the latest version of the App to control the download of all pdf files.
In Profile go to Offline Attachment Access.
If My Library is clicked to the left then EndNote is not downloading all attachments.
You can switch the setting to the right so it is green then click Done then click Sync.
EndNote will download all attachments.
You can also via Offline Attachment Access set just certain groups to download all the attachments if you have the option off for the whole library.
Please contact Technical Support directly for more details.
1-800-336-4474 option 4 then 1
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