it's me again.
I found some irregularity in embedding ACID tags when rendering selected media items. As soon as the project contains tempo markers, the ACID tags are not embedded in the resulting wave files.
In my opinion it still should be embedded with the tempo currently present at the beginning of an item.
HP Elitebook 8540w, 4x1,73 GHz, 8GB RAM, Windows 10 x64
Focusrite Saffire Pro 40 + OctroPre MkII