Does changing an export from "no_root_squash" to "root_squash" require a remount on the client side?

Situation: a QNAP NAS is serving several directories already and I want to change the settings away from no_root_squash to root_squash. * Does performing this impact anything other than user permissions? * Does a remount have to happen on the client side for this to take effect? I would expect it to be transparent to the client, however I can't find an answer on google, not even anything broaching the topic. Can anyone here tell me with certainty?