To update an option, accessory, electrical, performance, model or size for an existing configuration in CAPS, update your selection with the desired configurations first. The mark name needs to remain the same. Save the CAPS job and re-generate the Revit family.
Navigate in the project browser, finding the associated Family. Right click, and select 'Reload'. (This takes you back to the original folder and family from which the content was loaded. Select OK and all the marks you wish to re-load/update).
In Revit, re-load the content as was done before, by selecting the “Load Family” button on the “Insert” tab.