Some pre-security Journey notes are not accepted by the SNDB because I have yet to program the SNDB to accept them. It's something I've been trying to get to sooner or later, but it hasn't been a priority due to the few notes that are still circulating.
Email the prefix, serial number and position numbers to sndb@cdnpapermoney.com please and they will eventually be entered and credited to you.
As for spending them, that's your call. The SNDB does not make suggestions about keeping or spending notes because it has no knowledge of condition or value. If you think you should spend a note, spend it. If you think you should save it, save it.
Cheers
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BWJM, F.O.N.A.
Life Member of CPMS, RCNA, ONA, ANA, IBNS, WCS.
President, IBNS Ontario Chapter.
Treasurer, Waterloo Coin Society.
Show Chair, Cambridge Coin Show.
Fellow of the Ontario Numismatic Association.