I don’t think intransitive atalta can be used as the basic for transitive “to ruin”. It’s root is one of the rare triconsonantal verbal stems TALAT, and I don’t think it would allow causative verbal suffixes like yā or tā.

I think you would be better off coining a neologism from G. fectha “destroy, ruin, spoil”, probably from a root PHEK, hence Q. fehta, S. feitha.

Why not nancar-? eldamo.org - Eldamo : Quenya : nancar-
Egypt is Mirrandor in the NQNT.

I saw this as from ata-latya- to reopen.

+James Coish​ bingo

Hmm. I should have read more to get context. When I figured out it was the Library of Alexandria, I assumed the verb was “destroyed”.

Still, why not enlatya? The form at(a)latya would imply this is only the second time it’s been opened.

Re: latyane vs. latanye, the rule seems to be that intransitive verbs are pure weak verbs with suffix -ne while transitive verbs use nasal infixion before the prefix. Since latya is here transitive, I would use latanye. See, for example, PE17/64.

The same rule applies to the verbal suffix -ta which can also be both transitive and intransitive.

Ótulmanen (by coincident) min i ammaira parmaron úlume ehentanien, I Losilleva Esse, ná nyarna pá parmakoa ve sina.

+Paul Strack it is not the one in Alexandria: http://uk.businessinsider.com/ap-egypt-reopens-ancient-library-in-sinai-after-renovations-2017-12

+Paul Strack Isn't it the other way round? Cf. oronye, oronte intransitive, ortane transitive; virinye intransitive, vistane transitive (PE 17:64; PE 17:189).

+Björn Fromén You are absolutely right. I switched them in my head as I was writing.

And if I understand LVS materials correctly, levelling occured in Tarquesta, where only weak forms survived.