Removing a charges register entry

Hi - sorry for the flurry of posts recently but I want to get my application right first time. Which route is appropriate here, a request for alteration/correction of the register (PG83) or CN1 (PG19)? A Charges Register entry records that a conveyance contains exceptions and reservations, but that neither the original deed nor a certified copy or examined abstract was produced on first registration. That conveyance sold a different part of a larger estate. The land in this title stayed with the seller and was sold later, so the earlier deed would not normally be among the deeds for this title. Two abstracts of the wider site, which were lodged on first registration but seemingly not filed or retained by HM Land Registry, contain memoranda showing the aforementioned exceptions and reservations were made in favour of the seller for the benefit of the retained land, which includes the land in this title. They burden the other land sold and benefit the land in this title. The entry misrecords a benefit as a burden so I would like it to be removed and will lodge the abstracts again in support. Is that correction of a mistake or removal of a superfluous entry under paragraph 5 of Schedule 4 (i.e. Form AP1 + covering letter), or cancellation of a notice under rule 87 (i.e. Form CN1)? PG19 allows cancellation where the claimed interest is otherwise invalid, but panel 11 of CN1 asks how the interest came to an end, which does not describe what happened here as there was never a burden on this land, and the benefit to this land still subsists.

Hi Jay W - you can apply using form AP1. Form CN1 would not be relevant here and the entry is not the type referred to in PG19

Thanks Adam. A quick follow-up on a different entry on the same freehold register, this one reading 'A Conveyance of the land in this title dated [date] made between (1) [seller] (2) [bank] and (3) [original buyer] contains restrictive covenants'. Both the conveyance and a later sale from the original buyer to my predecessor in title took place while the land was unregistered and did not trigger compulsory registration. If the covenants were never registered as a Class D(ii) land charge against the original buyer, they would have been void against my predecessor in title under section 4(6) of the Land Charges Act 1972 and therefore do not now bind my title. Is that a CN1, or alteration via AP1 again as before?

Jay W - AP1 again.