We use an LTI between Canvas and WeBWorK and it works well enough except for the cumbersome task of extending due dates for a given student. With our current LTI these due dates must be reset in BOTH Canvas and Webwork.
And yet the folks at Edfinity say they have an upgraded LTI that permits dates set in Canvas to override the dates set in Webwork so that extensions only have to be set once in Canvas.
We notice that the homework platform XYZ also uses such an updated LTI.
It might be that this is a case that is LMS specific, but is it possible to upgrade our LTI to have the same overriding option for extending due dates?