Godot backup and re-import proper way

[lionandsheep]

Having a huge problem. Been working on a project with C#.
The project was deleted by me, and I thought I could just re-import the zipped files from the whole project.

I ask this question, because of my previous problem:

Cannot build from path containing #

Method of backup: in Godot go to file explorer and zip all files, excluding .godot folder. After having problems I could not fix. I deleted the whole project. Trying to re-import the project zip file. By Godot import, at project list. Then I get error as follows: Cannot build from path containing ‘#’, move your project or update dotnet to the latest version. C:\Users\chihw.nuget\packages\godot.net.sdk\4.3.0\Sdk\Sdk.props(34,5) What can I do? I already have the lastest dotnet 9.0 with Visua…

So my question is: what is the fool proof way to backup a C# project in Godot?

[gertkeno]

Most developers use git (and host on platforms such as github) or perforce.