Ok, all (everything in user/name) copied over except 1 LightRoom file:

Archived Digital Negatives-2 Previews.lrdata

I attached the error message.



I'm thinking that this file contains previews and will be rebuilt?  It is a 13.72 GB file (only 6.02 GB transferred).  What do you think about this file?

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I highly doubt that Lightroom would hold 13 gigs worth of preview (or thumbnail images). I’m no lightroom expert but from what I gather, the DNG files or (digital negatives) are an alternative file format that Lightroom prefers to dealing with RAW files. Users can choose to convert their RAW images into DNG files which Lightroom can then reference more quickly and effeciently. It may be that you still have all the original RAW files but your DNG files failed in the transfer.

Support articles here:
Adobe Lightroom - Importing your Digital Camera Files into Lightroom
Adobe - Digital Negative (DNG)

So you may end up rebuilding your RAW library into another DNG library. Let me know what you think.