Lost view! (May I post here for “Calendar”?)

[CALIPRO]

Bonjour, et thanks in advance for your assistance.
Win7 - Firefox 49.0.1 – Thunderbird 45.4.0 – Lightning
I deleted one event in Lightning. Stupidly. I would like to retrieve this event.
Here are the folder and files that I have :

AppData /Roaming/Thunderbird/Profiles/xxx3xxxx.default/calendar-data/


Folder backup : local.v19.sqlite 29 ko without changes since creation
local.v19.sqlite 364 ko without changes since creation

Files : cache.sqlite 1152 ko without changes since creation
deleted.sqlite 288 ko changed the date of the day when I deleted an event I would like to recover
local.sqlite 520 ko changed the date of the day when I deleted an event I would like to recover

Obviously, it is possible to recover the deleted event, and if so, how?

Thank you to forgive my expression in English!

[DanRaisch]

Moving to Calendar forum.