Hi there!
Thanks for reaching out.
If you can consider to move your site that is based on the Revibe template from Joomla 3 to 4, then it will be easier for you to make use of the akeeba backup, which will allow you to move the whole site with a full backup including database.
After moving to Joomla 4 you can switch your template then. I can see Revibe is based on Helix3 and the Investa is based on Helix Ultimate. So after switching template there can be some conflicts, which you need to adjust manually. You need to remove revibe template and helix3 system plugin also once you install Investa.
Best Regards