replace these chars with something related to the new LA

run this in console in the flow you want to copy (only works if no external portals)

copy(window.api.getState().flow)

paste the clipboard into a file in this dir called data.json

the following in replace.js, to match the LA you're copying to e.g. Bromley = Br

newId[5] = "B";
newId[6] = "r";

run node replace.js

create a flow in planx

copy out.json and paste output into data field of that flow in postgres

refresh the flow that you just updated :)