Part L (Simulation) not recognising changes made within Part L (Design Database)

Hi have just been modelling a building - Level 5 EPC and I have been adjusting the air permeability and lighting information within Part L design database.

 

Once I had the building 'passing' within Part L Simulation - I then went back into Part L design database to adjsut figures and Simulation no longer recognises any of the changes.

 

For example - air permeability I changed to 3 to help the building to pass and then once passed I tried to change it back from 3 to 10 and the BRUKL within simulation still showed 3 and does not recognise and change.

 

The same thing happens with lighting data in design database too.

 

Many thanks