A most enlightening reply Sir Ganbustein.

Now, I think I understand. But I still disagree with the approach Apple has taken.

One could always option-click (or some such) to (re)download, or, as you said, many of us squirreled away the installer immediately upon receipt.

Still, my many thanks!


Harv
27" i7 iMac (10.13.6), iPhone Xs Max (12.1)

Those who can make you believe absurdities can make you commit atrocities. ~Voltaire