Interoperability with other OpenHAB instance

Just tried your steps to pull the PR code…
A few minors changes to your commands:

sudo apt update
sudo apt upgrade
sudo openhab-cli stop
git clone --single-branch --branch jsondb  https://github.com/rkoshak/hestia-touch-openhab.git
mv /home/pi/scripts /home/pi/scripts.old
cp -r hestia-touch-openhab/home/pi/scripts /home/pi/scripts
sudo mv /etc/openhab2 /etc/openhab2.old
sudo cp -r hestia-touch-openhab/etc/openhab2 /etc/openhab2
sudo chown -R openhab:openhab /etc/openhab2
sudo mv /var/lib/openhab2 /var/lib/openhab2.old
sudo cp -r hestia-touch-openhab/var/lib/openhab2 /var/lib/openhab2
sudo chown -R openhab:openhab /var/lib/openhab2
sudo reboot

Followed by

sudo openhab-cli stop
sudo openhab-cli clean-cache
sudo openhab-cli reset-ownership
sudo reboot

Leaves me in a strange state with warnings like this

2020-03-30 23:37:58.636 [WARN ] [me.core.service.AbstractWatchService] - Directory 'things' does not exist in '/etc/openhab2'. Please check your configuration settings!
2020-03-30 23:37:58.640 [WARN ] [me.core.service.AbstractWatchService] - Directory 'rules' does not exist in '/etc/openhab2'. Please check your configuration settings!

and lots of errors like these:

[ERROR] [internal.handler.ScriptActionHandler] - Script execution failed: TypeError: items["Previous" + device + "Reading"].floatValue is not a function in <eval> at line number 14

I’m not 100% sure the image I started off was in perfect state so unless you see anything obvious, I will try again from scratch and come back with useful info.