Missing markers after rendering

Definitely not. If you are trying to send an EP or album master to somebody else to approve, use the DDP format.

WaveLab 9.5 now has a DDP Player you can include with the DDP file you send to another person and they can correctly audition the master using that.

Or if you want additional features like ability to burn a CD from the DDP Player, try HOFA DDP Player Maker.