I've read that Mosaic and Pathways were considered to be canon for Voyager when they came out. This was because they were written by Jeri Taylor and provided back story for the characters that writers of the show could use. I've also read that the details of the stores were later overwritten. How were these novels contradicted on the TV series or was it just that their details were incorporated into the TV series?
In "Coda" Janeways dead "father" referenced the crashed shuttle in an icecap, a major event in Mosaic.