Thanks for reposting this so clearly. It is unfortunate that our "reflex" seems to be to skip that first step.

I do something similar: TH-D72A as found 20200320 then TH-D72A HAM NOAA 20200327a TH-D72A HAM NOAA FRS GMRS MURS SL 20200327a TH-D72A HAM NOAA FRS GMRS MURS SL 20200327b

so that the saved file shows the content of the configuration. That way I can have several. I will often sit down and create different configs on the same day, so I change the "HAM NOAA" part to show that. TH-D72A GOTR2020 20200327a (to support a local event) I use "20200327a" > "20200327b" when I update a config the same day, and want to keep track of the changes. That way, if I screw up, I can go back and start over, but don't have to reload the whole radio.

~R~ 73 de Rich NE1EE On the banks of the Piscataqua

On 2020-03-30 18:43:-0400, you wrote:

(1) The first thing you must do with CHIRP is download from the radio to create an image (.img file) for CHIRP to use for your radio. Save-As that file in a safe place to have it available to restore the radio later if needed. Name it something like "FT-7100 Initial Download Image 03-20-2020" (2) Make the changes you want using the CHIRP editor, and then save that file with something like "FT-7100 Changes 03-30-2010" (3) Upload your newly modified image file to the radio.