So for classic Tasks list, you are able to manual sort and indent items. This sorting is persistent and not personal. List View sorting is set to None.
Performing a migration using SP Migration Tool from SP2013 to SPO, classic task list functionality is still fully available.
- Manual indent of items is migration
- Manual sort order of items is NOT migrated (it defaults to sorting by list ID)
I have found a hidden 'Order' column which isn't visable anywhere other than opening another column settings on the list and changing the URL to &Field=Order
- this Order column is not part of any content type or visible via SPD
- this column is present in the migrated list, but it not populated with data from the source
Anyone know any more about this column, can I extract data somehow?