Thank you again for the tip on renaming the zip file. Where I had gone wrong in the past was that I was renaming the base zip file INFINITERECHARGEField.zip to FE-2020.zip. I got the same error as I did before on Onshape:
FE-2020.zip failed to translate:
Root assembly file not found.
Ensure zip file name matches root assembly name
and the archive does not have folders.
It was the “archive does not have folders” that clued me in.
Within INFINITERECHARGEField.zip is ANOTHER zip file called “2020 Field CAD _ TU 10 _ 02072020.zip”. Within that archive is a folder called “2020 Field CAD”. Rename “2020 Field CAD” to “FE-2020”. Then make a zip file from that folder called “FE-2020.zip”. That zip file should only have the Solidworks files in them, with NO FOLDERS.
Log into Onshape, and find a place to upload the “FE-2020.zip” file. Click on the “Create” pulldown menu, and choose “Import Files…”. Select the “FE-2020.zip” file. I chose “Import to a single document”, and did not select “Orient imported models with Y Axis Up” or “Create a composite part when importing multiple or non-solid bodies”.
Hit OK, and after it is done uploading, you’ll get a “Saving…”, followed by an “Importing…”. I got the following message when it was all said and done:
FE-2020.zip was translated with errors. Parts with faults have been imported.
Hopefully this will help anybody wanting to know how to do this in the future.
Again, thank you very much for the help!