To change the default print preview from Wireframe to the actual render, follow the below steps:
1. Go to File Options Render Settings
2. Look to the 'Print Render Settings' heading
3.De-select 'Show wireframe preview in Print Preview'
You will need to close and re-open 2020 Fusion in order for this change to take effect.
Thereafter, all print previews will default to being displayed in the actual render shown in the selected named view(s).