vscode: Can no longer sync extensions by copying extensions folder because of new extensions.json file

Does this issue occur when all extensions are disabled?: N/A

• VS Code Version: 1.74.0
• OS Version: 2 Windows machines with different extension paths and/or usernames.
• This more than likely replicates as an issue on non-windows machines but I haven’t tested it.

Steps to Reproduce:

1. Copy %userprofile%\.vscode\extensions from one machine to another. Both with active vscode installations.
2. Launch vscode on secondary machine.
3. The machine with the copy of the extensions folder doesn’t load any extensions.
4. Close vscode on secondary machine.
5. Change all instances of the fsPath property in %userprofile%\.vscode\extensions\extensions.json to match the new machine’s username ex "fsPath":"c:\\Users\\USER1\\.vscode\\extensions\\author.extensionID" into "fsPath":"c:\\Users\\USER2\\.vscode\\extensions\\author.extensionID"
6. Re-launch vscode on second machine.
7. Note that extensions now load correctly.

I don’t know when this extensions.json file was added but previously doing this copy paste procedure of the extensions folder simply copied all installed extensions without issue. Now the newly added extensions.json file must be altered for it to work. This makes syncing extensions to a machine by USB or file-sync significantly more annoying.