Hello, This is driving me nuts and is a longstanding annoyance with Wavelab that I though would be have been resolved by now. Please let me know if there is something im doing wrong… Here is my workflow. (WL8.5 on a mac )
create montage with 24bit 48hz files and lay them out / Add Markers / insert ISRC and CD Text.
export the regions as AAC files for Itunes plus.
Render the Montage as 16bit 44.1khz and create as a new montage ( markers are copied across )