Trying to implement two resolutions using a single encoder port and an external encoder switcher proved to be too difficult to configure. Correcting for encoder tracking was very unfriendly and caused much confusion.

This option is being removed and is being replaced by the changes described in SCN 2935 - Addition of Dual Line Encoders.

This means that any customer using a version 3 controller that wants dual resolutions for their line encoder must upgrade to a version 4 controller.