Within Admin > Studio, there’s an “Export Customizations” button. I used this feature to export all customizations and imported as package into another CRM instance via Module Loader. Import was successful without error.
When importing Contacts, I have encountered errors because several items for the Salutation field were missing. After manually adding the missing items for salutation_dom, the Contacts import was successful without issues. Why did the Export Customizations missed the changes to salutation_dom in the first place? This got me thinking that export may have missed saving other customizations.