Before you migrate your forms:
1. Migrate your site(s) using standard SP migration tools.
2. Please make sure that you have the same AD/SharePoint group names in the source and target environments.
3. Target lists and source lists should have the same list name and column names.
4. Install Forms app in your Tenant. This is part of our KWizCom Modern Apps.
Export:
1. Export KWizCom Forms add-on settings from required lists your SharePoint 2013 - 2016 on-premises environment. You can do this by going to your list settings within your list ribbon and selecting "KWizCom
forms export to KWizCom Forms app". 
2. From there you will want to select "Export" and you will by prompted to save the exported file as a .txt file. 
Import:
1. Go to the same list that you have in your SharePoint Online or SharePoint 2019 environment. In your modern list, please select the KWizCom Apps in the tool bar which is where you can import
your Forms settings from SharePoint 2013-2016 On-Premises environment.
2. In the KWizCom Apps, you will see Export/Import settings.
3. After that, you will want to click import which will allow you to import your Forms settings from SharePOint 2013-2016 environments.
