Thank you for your quick attention to this and the improvements. I installed the update, which may have revealed what is wrong with my file. Here's the error CB returned:
Failed to parse time string (09-27-2024 01:05:17) at position 0 (0): Unexpected character
I had the date in the wrong format—I was using mm-dd-yyyy, when it should have been yyyy-mm-dd. I probably messed it up when I returned to it after not working on it for a week, because I originally followed the format of the exported file.
After I fixed all the date fields, the file imported with no errors.
I appreciate your patience in working through all this with me. I hope the updates you made will help others in the future with better results and pinpointing problems when CB reports an error in the process.
Thank you,
Ernie