Modification Package not doing what I want
- Jan 18, 2019
For this scenario, consider doing a second full conversion of your 18.3 installer. That should give you the cleanest capture of the file and registry changes. Keep the package identity the same as the package you created for 18.2 and just increment the version number of the MSIX.
By virtue of being MSIX packages, when you install the 18.3 package, the deployment process will compare the block hashes of the new package with the existing installation. It will attempt to scope the actual deployment work to only files that have changed. Additionally, this update should preserve the apps user data, so only the underlying installation files should change.
Note: If you have configuration that is contained within the apps installation files or registry keys, that's where you might consider leveraging a modification package. The modification package can persist across full updates, so if you needed to always customize a particular registry key, for instance, the modification package would be appropriate.