If you are migrating SharePoint
to Office 365, I presume this is the thing you are trying to accomplish (if
not, then specify please), then I would recommend you to actually get at least
a consultation from a firm. Migrating SharePoint is quite a nasty business. All
I can do, is give you the link to the company which can help you, because you
can actually cause more harm if you sync incorrectly your legacy applications.