In JMeter GUI mode, choosing Plugin Manager, if I install/uninstall/upgrade I get a Restart JMeter button which will restart and open My current JMX with updated configuration/libraries
Is there an option without Plugin Manager or changing plugin to restart JMeter and open My current JMX with updated configuration/libraries?
Usage: add new/updated library(jar) and check if it's working correctly
No. as of JMeter 3.3, but you can ask for an enhancement request.
See: