1. If the server is shutdown properly i.e. shutdownServer is invoked or service evostreamms stop, the settings should be intact upon restart. But if the server is killed abnormally, there is no guarantee that the settings will stay intact.
2. Yes of course, you can pull an mpeg-ts as an inbound source. Pullstream parameters are all the same with any source the uri parameter would then be something like pullstream uri=dmpegtsudp://<hostname>:<port>.
the <hostname>:<port> is ofcourse the unicast/multicast or broadcast address where the UDP stream is being sent
Yes, you can also transcode the streams and produce HLS from it. Please see the manual for that