I have two custom masterpages, one for site, and one for the system pages. Both of these masterpages use the same CSS file, and they both also reference a different CSS file than the other.
SiteMasterPage: CSSFileA CSSFileB
SystemMasterPage: CSSFileC CSSFileB
If I have both of these masterpages being defined in the Site Settings ---> Masterpages, no matter what I do, SharePoint decides to use the SystemMasterPage for both the Site and System. To prove this, while on the root (http://sitecollection/SitePages/default.aspx), I view the source and I can see clear as day that it is using both CSS files from the SystemMasterPage declaration (CSSFileC & B), and NOT the SiteMasterPage (CSSFileA & B).
Can anybody explain this?
This is another example: SitePages uses System Master Page
Thanks in advance.