In the last meeting, while we discussed the possibility of using YAML for an MDITA map, I got an action item to check if the DITA OT supports the current Markdown-based map. The answer is no, the DITA OT does not support it. The info is on this page of the DITA OT docs:
https://www.dita-ot.org/dev/topics/lwdita-input.html There is this note in the MDITA section: "Attention: The MDITA map format is not yet supported. To include Markdown content in publications, use an XDITA map or a DITA 1.3 map." Mark