On the Export tab, click Export Task Info as MPX.
Click
the MindManager Button 
, click Save
As, and in the Save as type
list select Microsoft Project Exchange
File.
Before exporting to an MPX file it is important to prepare and code the map properly.
Always omit durations and percent complete values from Task Summaries (topics that have subtopics).
Enter Durations on every Task Topic (the leaf topics).
Enter Resources on every Task Topic.
Use the "Clock" Icon to mark Topics that are Milestones, and leave their durations as zero.
Enter only essential date information on the task and task summary Topics themselves. The project management software will calculate the baseline start and finish dates of each task for you. Where there is a constraint on the start or finish date of a task or phase, enter it in the Task Info pane for that Topic. Use priorities to give additional control over the order in which tasks or phases are done.
If your project is scheduled from the Project Start date, then for each Task Topic
A "Due" date takes priority and means Finish No Earlier Than
A "Start" date means Start No Earlier Than
Otherwise, the task will be scheduled to start As Early As Possible.
If your project is scheduled from the Project Finish date, then for each task Topic
A "Due" date take priority and means Finish No Later Than
A "Start" date means Start No Later Than
Otherwise, the task will be scheduled to start As Late As Possible.
Draw Relationships from tasks to their successors, where the successor task depends on a predecessor being completed. The relationship should have only one arrowhead, and should point from the predecessor to the successor. Various types of relationship are possible, as discussed under the Preferences topic.
Entering fewer constraint dates means that you may need to include more relationships to indicate task dependencies, in order to achieve a realistic schedule, or use priorities to ensure that tasks get scheduled in the order that you want them to be. You can save time by grouping tasks in the same phase together, then setting a constraint or a predecessor on the whole phase.
You can include topics in the project tree that are not task containers or tasks, and use the Filter feature to hide them before export. Hidden topics are not included in the .mpx file.
You can export the tree under the currently selected topic to a MPX 4.0 format file. If nothing is selected, the whole map is exported.
Do one of the following:
On the Export tab, click Export Task Info as MPX.
Click
the MindManager Button , click Save
As, and in the Save as type
list select Microsoft Project Exchange
File.
Mindjet Catalyst - You can save the file to a workspace by choosing Workspaces as the Save in location, then selecting a workspace.
If you do not see MPX on the Export tab or in the Save as type list, you need to enable the MPX Import and Export add-in in MindManager.
Enter the file name and select the location for the MPX file, then click Save.
Make your
selections in the MPX Export Settings
dialog. 
