Convert Atlassian-Connect app to Forge

Hi I have followed the steps provided by the documentation How to adopt Forge from Connect . I got the descriptor and created the forge app. Now i can able to deploy it. It automatically replaces my atlassian-connect app when i deploy it with the same key of my atlassian-connect app.

My descriptor look like this,

app:
  id: ari:cloud:ecosystem::app/xxx-xxxx
  connect:
    key: com.jira.addon.xxxxx
    remote: connect
    authentication: jwt
  runtime:
    name: nodejs20.x
  licensing:
    enabled: true
remotes:
  - key: connect
    baseUrl: https://xxxx.azurewebsites.net/
connectModules:
  jira:lifecycle:
    - key: lifecycle-events
      installed: /installed
      uninstalled: /uninstalled
  jira:generalPages:
    - key: CrystalGanttAddon
      location: system.top.navigation.bar
      name:
        value: Crystal Gantt
      url: /Gantt

#1 - Is there anything that we have to do in the process of migrating to forge?

#2 - Can we reuse the Express/ACE-specific parts (routes, addon, res.locals.license) directly as before?