Migration from 5.2 (Pervasive) to 5.5 (MS.SQL) will not be a big deal, as suggested you can do the same just by DBDUMP and then DBLOAD. But you need to take care of few things which are as follows:
1. Take note of all customised reports n customised forms or customised reports
Which may need to modify as the new DB format.
2. If you were using Optional fields then need to make necessary arrangements for
the same before migration from 5.2 to 5.5
3. Last but not the least, all open batches from all modules should be posted after
the DAY END
4. It is also advised to run Data integrity checked before starting this migration.
All the best,
Alam,