Adding my +1 for some way to set which PDF to open by default.
As others mention, this is a common problem for me when supplemental files are attached and Cochrane Reviews which include both a Summary and a Full Review are available for the same article.
It is disappointing that this is still not a built-in feature. I think I have more entries with multiple PDFs attached than ones with only one and it has been a headache to remember to first only add the files I want opened by default and import all others later.
Upgrade Storage
As others mention, this is a common problem for me when supplemental files are attached and Cochrane Reviews which include both a Summary and a Full Review are available for the same article.
It is disappointing that this is still not a built-in feature. I think I have more entries with multiple PDFs attached than ones with only one and it has been a headache to remember to first only add the files I want opened by default and import all others later.