Here is the situation:
We already built a MindMap with Xmind (I sometimes use Freemind too, or I could also export the Xmind to a Freemind format).
I would like to create a Gantt Planning in Microsoft Project (this is what we mainly use here).
My questions are:
If you can convert your mind map to Freemind, there is some documentation on the Freemind site which provides a couple of approaches to reformatting the Freemind file as an XML file which MS Project can read.
I maintain MPXJ, a library which can be used to read and write file formats which MS Project works with. I felt sure that someone had already written an add-on for Freemind which allowed you to export mind maps as a project plan using MPXJ... however I can't find a reference to it any more! If you don't mind a bit of coding (in Java, or any of the .Net languages) it wouldn't be too hard to achieve what you want using MPXJ.
Jon