Are all updateFromXXXX methods in ScriptLoader supposed to stay
where they are? Or will they be removed by any major version
change?

ScriptLoader seems to collect some cruft. There are things
referenced that aren't in the image anymore. 

FixVisible 

is referenced in updateFrom7024 but is not in the image. There
is ReleaseTest which tests if Undeclared is empty. For 3.10 it
seems that this test has been fixed by manually emptying the
Undeclared dictionary. If you e.g. file out ScriptLoader and
file it back in you will see that there are 2 failures running
the test suite (instead of 1).

So what is updateFrom7024 useful for if an update to 7025 already
happened. Shouldn't any further update delete the former one?
Otherwise many delete operations in updates will lead to cruft,
won't it?

Norbert