Can a Licence Restriction be lifted?

Yes!, If you want to “lift” the gearbox restriction on the Licence that you currently hold, then you have to use a vehicle with the gearbox type that you want to drive to undertake your training and assessment. For example, if you currently hold a MR with a B condition then you would need to use a truck with a road ranger gearbox (non-synchromesh) to undertake your practical driving test and this will lift the restriction to get you an open licence (unrestricted)