Can a judge in a different state enforce alimony garnishment in Florida?
No. The foreign judgment must be domesticated in Florida.
In very broad terms, yes. your question is way too general to give you an accurate answer. You should probably consult an attorney if you have questions about a specific garnishment.
IF the foreign judgment has been domesticated in the State of Florida, then the garnishment will resume.
The foreign order has to be registered here in FL first and recognized by the FL court.