Hello,

It's possible using PHPadmin, to export and import selected iCagenda database tables.

For this, the same iCagenda version should be installed on both websites (J3 and J4). You can use the latest iCagenda version 3.8.8 on both.

You will have to transfert too the "icagenda" folder in your media folder (images and documents you have uploaded in iCagenda such as event images and attachements).

For global params of iCagenda and module, you will just have to copy/paste the column value for "params" from the selected extension (component icagenda, module iccalendar) in the #__extensions table.

Hope this helps ?

Best regards,
Cyril