there are normally issues when exporting/importing planning data between different planning software. The kind of issues that typically arise are :
- incomplete long text strings (descriptions, comments)
- different time analysis results for :
- float ( both total and free)
- out-of-sequence updates
- calendars
- different summarised values of PPC (Physical Percent Complete) based on lower level manhours and progress
- code files not always importing (eg WBS)
- incompatible activity types (especially around hammocks)
So once you've taken the schedule into MS Project, you need to check it thoroughly before using it. And I wouldn't reccomend doing this on a regular basis.