https://www.slab.org.uk/faqs/transfers-of-legal-aid/
Where the grant of legal has been transferred to another solicitor you should not attempt to submit your final account. When the case has concluded and we receive the final solicitors account you will receive a notification informing you to submit your account. You can use our online system to draft your account and ready for submission.
You can make an interim claim for any completed blocks or time and line work, where appropriate prior to the case concluding.