[Koha] Authorities lost during upgrade to 3.6.1

[Paul]

Earlier I wrote: QUESTION:  Does this warning "Record didn't contain match 
fields in (bib1,Local-number)" have a specific cause that has been seen before?

We have been scratching around, and can find nothing wrong for the record 
in question.  I'd rather not just delete it (in case there are more records 
further down that have the same problem) so if somebody could help with the 
relationship between "bib1" and "Local-number" i'll have another try at 
finding the cause.

There is another weird glitch that has "appeared" since reindexing 
zebra.  Results.tt at line 496 calls for SEARCH_RESULT.size which is from 
Marc 330$c (physical height of book in cms.)  It appears correctly (OPAC 
and staff) if there is a value in the biblio record, but if 300$c has been 
left blank during cataloguing (either manual or Z39.50) then various two 
digit numbers (e.g. 47, 50, 52, 58 etc) are appearing in search results - 
and they are NOT identical in the OPAC and the staff searches.  If I reboot 
the server, the values change ;={

Any ideas, please?

[For any future reference, I found the answer to my previous question "Is 
there a way in staff-client to find the record matching biblio # 
12,836?  Entering without quotes "biblionumber: 12836" (no comma delimiter 
for thousands) is the way to go.]

Again, many thanks - Paul