Hi Eunice I cannot answer your question specifically Im afraid, although might be worth speaking to the online helpdesk at HMRC. I had the same issue last year when I took a new client on who had set up the basic tools, but had made a mistake on his wages but fortunately hadnt done his RTI nor his year end, so I set about trying to replicate what he had done on my own software - took a little while as getting the right reports from him was a bit of a mare, the rest was easy so it worked in the end. Might this be an option in your scenario - maybe getting P11s then upload to your software and doing whatever you need?
Oooo - just found this - MAY be what you need???? https://www.gov.uk/downloadbpt
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Joanne
Winner of Bookkeeper of the Year 2015, 2016 & 2017
Thoughts are my own/not to be regarded as official advice,which should be sought from a suitably qualified Accountant.
You should check out answers with reference to the legal position
