I would say this happens on about 1 in 10 components when I try and update the supplier links.
1) Open library and select supplier links
2) Hit add, put in the part number, hit search. It comes back with some:
3) Some will have no pricing (as an aside I find Newark has this problem a lot which I find ironic given CS is sold by Newark) but here I selected three that do.
4) hit OK
Digikey and Newark pricing are gone, and subsequent BOM generation also returns no pricing for those even though it seems to know about it when selecting the suppliers.
I can't figure out any pattern to when the pricing doesn't show up, but it is consistent. I want to say I didn't notice this problem of pricing info disappearing in the prior version. It's not a supplier specific problem, i.e. other parts from the distributors show up fine.
Puzzled as to what's gone wrong and if there's some sort of workaround. For now I just delete any with no pricing as I have my spreadsheets setup to use that info and FREE (right, that's what blank = 0 means?) confuses it.

