Import flow configuration from file

I need to configure node red in order to collect hundreds of tags from a PLC to be sent to our cloud via MQTT.
The point is that if I image to manually make the configuration by the graphical interface it will gonna take a wile.
We also make different machines and we have to adapt the configuration machine by machine and it involve many of this tags that make the usage of the graphical interface again very difficult.
Do you think there is any way to use text file to import the configuration (list of tags) in order to make the config process automatic?

Thanks for any suggestion