In a list (named "Delivery") I created a new view Forms.aspx (by copying defalt View AllItems.aspx), made it default, heavily modified but after running it (from SPD 2012 by F12 or directly from a browser) and asynchronous refreshing of a one of webparts on it, it was redirected AllItems.aspx . And after I deleted AllItems.aspx and tried to enter to this ("Delivery") list (default view), it was still trying to fall back to nonexistent AllItems.aspx (of that list "Delivery") upon clicking on controls of that view.
So, in order to escape this situation, I deleted AllItems.aspx and renamed Forms.aspx to AllItems.aspx (still maintaining it as default). Now F12 from SPD launches Forms.aspx (?! and it works!?) though neither "Site Pages" or "Delivery" list settings in SPD2010 nor list settings in a browser(Site Actions --> Site Settings --> Site Libraries and Lists --> Customize "Delivery") shows any Forms in "Views" section at all (only AllItems.aspx)
Kind of tired of this situation because I heavily customized the default view.
What is happening?
And how can remedy it?