Thank you for your help. I moved the two new pics into a new folder and was able to add them to the listings. (One of them did take two tries.)
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I will file a help request also. The folder in this particular instance I keep to a minimum number of photos, much less than others and the larger folders seem to show all (or many more) pictures...
Thanks again for your assistance. Issues I generally experience are short lived, so I've never posted. I appreciate your time, attention and kindness.
Rhonda