my best guess is unlucky coincidence…
What I typically do is every now and then:
- save the workflow and close it
- right-click the workflow in the explorer tab and duplicate it:
- this creates sort of a backup…
especially when I am developing quite fast I do this every hour or so and then also before starting any major changes and updates.
For a more robust solution you could use KNIME Hub (either business or community on a team plan) and use the versioning feature.
Another way would be @mwiegand s solution to backup entire workspaces…
Read more here: