Comma before colon is automatically removed


I am working on a style for the people from the French department at our university and I have just bumped into a problem with the in-text citations. 

My citation template looks like this: (Author Year|[link adjacent text]:[link adjacent text][Cited Pages]|

The problem is that Endnote always strips out the “link adjacent text”-space before the colon. Is there any way to resolve this? Thanks for your suggestions,

Geert Bonamie,

Ghent University, Belgium