Hi Jess - the application you refer to is the one to register a restriction. It's not to remove anything and nor have Restons asked to withdraw it.
The application is close to being completed as the wider checks complete today. If no replies have been received, and none are showing up as yet, then it should be completed in the next 48/72 hrs and a new restriction added to the title as appropriate
After that any sale/purchase will be based on the updated register as normal and any exchange/completion can take place as appropriate.
The restriction to be added is what is known as a standard form K restriction. There is one already registered as well re another charging order. The conveyancers dealing with the sale/purchase should both be aware and also of the impact/requirements associated with such form K restrictions and how they can be complied with when completing on a sale/purchase - see PG 76 section 4
Charging orders (PG76) - GOV.UK