There are other ways of doing this, but here is how you can use CodeNow plugin for XrmToolBox to update FetchXml for a system view (you will need, at the minimum, v184.108.40.206 of the CodeNow plugin)
Load CodeNow plugin (if it’s not installed yet, go to the plugin store in XrmToolBox and install the plugin first)
Make sure XrmToolBox is connected to Dynamics:
And select “Online” storage from the list:
Then select “Set View Fetch” script
If you run the script right away, it will run for the account entity. You can change the entity name if you wish:
Then click “Run”
The script will ask you to choose a view
And, then, to provide updated fetchXml for that view:
Once you have provided updated fetchXml and hit “ok”, the script will go on to update fetchXml for that view, and, also, to publish all customizations. At which point you will be able to see the results of that update in Dynamics.
By the way, this script also demonstrates a couple of new features that’s been added to the CodeNow:
1. CodeNow script can ask users to choose one of the options from a dropdown now:
string selectedView = Helpers.GetSelection(“Select a view”, “View Fetch Updater”, viewOptions);
2.CodeNow scripts can ask users to provide text input now:
string newFetch = Helpers.GetTextInput(“Enter FetchXml”, “View Fetch Updater”);
This allows for a bit more interaction and a bit less coding, so the same scripts can be re-used by non developers even easier.