Editing an Existing Project
To edit an existing ETL package, click the Project Name on the Current Projects screen.
This will open the Package Summary, with a list of all forms, clinical coding systems and other information chosen in your package.
There are two options for editing a package.
Remove Generated
Use Remove Generated if the current package has not been applied yet. You can then edit to make relevant changes and re-generate the package from there.
Creating a Delta
If you choose to Edit the package without removing generated, this will allow you to create a delta which will be applied on top of your existing package. This is for making any form changes or adding new forms after the package has already been created and applied.
Big projects will likely end up with several delta packages to apply.
Not all changes are supported for deltas. Some changes are classed as destructive changes and are not supported. For example changing the question on a line.
A list of supported changes is available here.