If you the sling documentation for servlets, resolution happens with service ranking as well
Please give your servlet with highest ranking in order to pick the default servlet
Hope this solves issue
Could you please check the cron expression, if you have wrong expression you cannot see that in scheduler console
Also check if all the Reference services are up and running
Refer this sample example for end to end scheduler code
That means every OSGi config needs to be committed deployed through the source control
Refer to this as well, you will understand more on it.
As of now package manager is the option that we have but as per my previous discuss on the same adobe mentioned that they are creating a tool for content migration between cloud instances.
You can raise the adobe ticket and get that tool information.
Hope this is helpful
Follow this document and use can find the configurations for SAML handler and other ldap related configs
If you have the same configurations then, check below documentation for user sync