Hi Duncan,
Thanks for contacting Syncfusion support.
We are not unclear about your requirement, so could you please share following information that will be helpful to provide you better solution at the earliest?
1. Code snippet or sample.
2. Scenario to reproduce the issue.
3. Are you perform filtering and Sorting to the Grid DataSource.
4. Error screenshot if any.
5. Are you using the UrlAdaptor in Grid? Share controller code snippet if use UrlAdaptor.
6. Please explain this query: “I can filter the results however Sorting results in an error as the field 'From' is not featured within the original datasource. Why is it that the grid is capable of filtering without the original datasource, i.e using its model but is not capable of sorting?”
7. Please explain how you are performing data operations such as filtering, sorting etc.?
We have checked the issue but we were unable to reproduce the issue from our end. Refer to the sample in following link.
Regards,
Balaji Marimuthu