Ah! Thank you! I see now. This feels a lot like building it backwards but yes I understand. Thank you for the response!I see your problem. Your filter only knows how to move to position x 1305. If you closed OBS when the source is in position x 1305 then it won't swap position. You have to close OBS when the source is in position x 440 in order the filter to work everytime you restart OBS.