During the installation process of our software, the license ctlmd.lic is asked for.
You can ignore this request.
The CTLMD.lic was needed for the DELTAGEN releases lower than DELTAGEN 10. It was a former converter license but with DELTAGEN 10 all converter licenses were moved to the rttlmd.lic file. So the rttlmd.lic is the only license you will need for FlexLM.