All Collections search giving less results than Records search for a specific Collection
Here's just one example of several I have found.
If I do a basic search for surname=Tinkham on All Collections and then filter to England, Yorkshire, Parish Registers, 1538-2016, I get 37 results.
If I do the same on a Records search, I get 41 (and if I export, I also get 41).
I cannot see why on earth this would be - any ideas?
(The mysterious thing is that the overall total of records for surname=Tinkham has the same value for both types of search (88,533 today - although the collection level numbers listed by All Collections total to only 86,438).)