Merge pull request #10261 from Ultimaker/CURA-8468_fix_project_loading

Fix project loading Arachne

plugins/VersionUpgrade/VersionUpgrade49to50/VersionUpgrade49to50.py

@@ -109,6 +109,8 @@ class VersionUpgrade49to50(VersionUpgrade):
         # Update version number.
         if "metadata" not in parser:
             parser["metadata"] = {}
+
+        parser["general"]["version"] = "5"
         parser["metadata"]["setting_version"] = "18"
 
         result = io.StringIO()