I'm working on an existing plugin at the moment and we have the need to change the type of a field on one of our custom build steps. The field is currently a checkbox, stored as a boolean, and we need to change it to being a drop down with a couple of options. Two of the dropdown values essentially equate to true and false from the checkbox, so the translation to the new data values should be straightforward.
I'm new to TeamCity plugin development, and what I'm not sure about is how to actually migrate the existing data. I've been looking for a hook in the RunType for the step but nothing seems obvious there. Does anyone know what options there are for migrating this data?