I would like to keep my legend on as I export a multipage map set to PDF, but the legend appears to lose any layer items and just keep the title ("Legend"), which is what appears in my PDF document.
My map set in Composer has 12 pages, 8 of which contain similar content: a map window with different views of the same extent for each page, a legend that is set to the correct map window on each page, a scale bar for each map window, and title and descriptive text. Each legend has a sequential ID value from 1 to 8 ("Legend 1" ... "Legend 8") and is filtered to viewable layers.
I am running QGIS 2.8 on Windows 7. All my layers are shapefiles.