I finally found a solution to import the world. The world has not had any bugs or chunk issues and runs fine with plugins.
Here’s what to do if you’re having the same issue as me:
Copy the entire folder structure of the world to be imported, either to your MineOS file-system (or somewhere that your file-system can access)
Rename the topmost folder to “Import_World”
In MineOS Web Console:
Click on “Create New Server”
Enter server details - make a note of the servername DadsTestServer
Click the “Create New Server” button
Click “Server Status” - make sure the Currently Selected Server is the one you have just created
In the Server Actions area, click the “Change profile to:” combobox and select a profile (1.14.4)
In the Java Settings area, click the “Change runnable jar to:” combobox and select the same version .jar file as the profile selected in the previous step.
Connect to the File System of your MineOS install:
Navigate to the folder that has the “Import_World” file that you created/copied/renamed in the first step
Copy this to the folder structure of the MineOS server that you have just created using the following command replacing {servername} with the servername created in MineOS
cp -rv * /var/games/minecraft/servers/{servername}
navigate to where you have just copied the world
cd /var/games/minecraft/servers/{servername}
give your MineOS read/write permissions to the world data - otherwise it will reset the world, not retain inventory etc etc
chmod -R 777 Import_World
Return to the MineOS Web Console:
Click on Server.properties
Change the “level-name” to “Import_World”
Click “Server Status”
In the Server Actions area, click the “Accept EULA” button
In the pop-up window click the “Accept EULA” button, then the “Start” button
The “logs/latest.log” link should appear after a few moments and your server should now be running
Open Minecraft and connect to your new server