Some results have changed between Source 4.7 and Source 4.9. The eWater development team maintains a detailed system to track when results vary between different version of Source. The areas with differences are: 

Models with Resource Assessment:

Changes for Plugin developers

To test your project:

  1. Create a regression test in Source 4.7, see 4.7 Regression testing.
  2. Run it in Source 4.9 to test for any result changes, see 4.9 Regression testing

Details of changes for each beta release are here:

4.8.0 Regression Test Changes
4.8.1 Regression Test Changes
4.8.2 Regression Test Changes
4.8.3 Regression Test Changes
4.9.0 Regression Test Changes from 4.8.3beta

If you would like help with your projects or would like to have your projects included for testing, please contact support:

List of causes of regression test changes since 4.7: