What you have in the citation template is a bit unusual. Accession Number(Author, Year)
Perhaps it is droping the ( if the Accession Number field is empty?
I am not certain how Endnote will treat it and you try a “separate” or maybe a space character between the Accession Number and the (. I have no idea if Endnote changed the way it treats the Citation that might have affected the way it is “output” between versions?
How exactly do you want these to appear in your text?
(in Edit) So I did some testing. – putting in the | works to retain the ( in single citations with or without an Accession Number in the record field, but it doesn’t really work well in multi-citation groups.
Accession Number|(Author, Year)
single citation with accession number
One citation 3166123(van der Feltz et al., 1988) two citations_2625253(van der Feltz et al., 1989)_ three 2002425(Wiedemann et al., 1991)
But then three grouped together - you get this: 1342963(McCarthy et al., 1992; 3166123(van der Feltz et al., 1988; 2625253(van der Feltz et al., 1989; 2002425(Wiedemann et al., 1991)
single citaion without an accession number in the record:
Without accession number (Wiedemann et al., 1989)
BUT Multi-citation groups (mixed with and without acc numbers)
Now is the time (Janssen et al., 1995; (Johnson et al., 1978; 1342963(McCarthy et al., 1992; (Mizutani et al., 1987; (Morgan et al., 1990)
nsf separation.ens (13 KB)