Add the ASU microflow in your own After startup microflow. If you don't have one configured, create a microflow called AfterStartUp Use this one as after startup microflow and add the ASU microflow of the module as sub-microflow to your new microflow. See documentation: https://docs.mendix.com/refguide/project-settings#after-startup
The login microflow contains two parameters SigninUser and AnoUser. The first contains the object of the user signedIn, the second the anonymous user. Each user has a referenced session object. So if you want to handover certain objects from anonymous user to signedIn user you can use the session object. Model in this microflow the behavior you need.
More information to be found in this forum thread: https://forum.mendix.com/link/questions/87216
Here is what I am doing. I made it as simple as possible to test if this is working. Added the ASU microflow as the startup microflow. Have a login page, but after I logged in , the “SignInMicroflow” where both the “SignInUser” and “AnoUser” parameters are present, is not getting called (last image),. Am i doing it incorrectly ? Please advise.