Same here, works well.As I use Wicked which doesn't play well with water, I dump paint, spray what's left behind, wipe cup with towel, add a little reducer, backflush and dump, then spray a little reducer through til clean - around 20 secs.
If just reducing with water, I know some people do as above, then final step immerse AB in bucket of water and spray.
Awe ! its getting all confusing now, if only because some are saying use water to clean ,and some are saying don`t . Looks like me forgetting to mention what type of paint I use WAS important after all. Sorry my fault, and I really should explain better up front then I won`t confuse the matter.