If some items are grayed out and can’t be sold after you clone from one Clover account to another, the two accounts may be on different Clover service plans. Some item types only work on certain plans.
For example, items with variants require a Clover service plan that supports variants. If the receiving location’s plan doesn’t include variants, its devices can’t display those items.
To fix this, compare the two locations’ plans and upgrade the receiving location if needed. You can view more about Clover Service Plans here: https://www.clover.com/help/compare-clover-service-plans/