If I edit the RAW to export as TIFs or even JPGs... an XMP file is created storying all the data changes I have made..
How do you edit the RAWs? There´s absolutely no need at all to use XMP files.
If you are working with Lightroom: just export the processed images as Tiffs (preferably 16bit - but be warned: very big data with D800 files.)
Transferring the XMPs only is useful if you need to process them further in an app like
AfterEffects or something like that, where you have the opportunity to edit them in an alternate way but keeping all settings you made before.
Usually that´s not necessairy - but sometimes it´s clever to do it with timelapses-editing in postpro.