Prusa rescue does not work when printing from server since it is not printing from sd card. Only exception is if it detects loosing steps it will correct that automatically.
Server has a own rescue solution also it might log some moves, but when enabled it gives you an idea on where it happened so you can eventually continue if no homing/bed leveling is required which is impossible with objects on bed. This works best with z max homing printers.
You can also check print history which shows where a print was aborted. That can allow to to make a reduced g-code so you can continue if you can restore end conditions (temperature, z position home xy)
