VAT Issue

I am currently moving over to Clear Books as I need to use MTD for VAT. In my old accounts system I overlooked claiming expenses that had VAT. I entered them in my y/e to 31/3/2022 to make sure the expenses were in the correct year for my Self-Assessment, however the VAT was not claimed on my last VAT return to 30/04/2022 that I filed via HMRC online.

I now need to claim the VAT in my next return, the first one under MTD, which will be on Clear Books once I eventually manage to get everything set up. I have spoken to Clear Books and they were helpful but I am still a bit confused. Clear Books suggested a journal adjustment, but I am not sure what the entries would be. The amount is not huge - £840 net and VAT of £168. I can just include the £840 net in the year to 31/3/22 on the old accounts and then show an invoice for the VAT only in Clear Books in the next VAT period, however that would mean I need to clear the VAT only element using the balance in the Creditos account as I paid the full amount last year. I am sure it will all be easier once i get the hang of Clear Books.

Any suggestions would be appreciated.

Quick update - I called HMRC and I will send in a VAT652 and include the full invoice including VAT is the y/e 31/3/22.

Only issue now will be getting the VAT Control balance right correct. Hopefully it will just be reflected in the VAT Control opening balance.