The KEEPMOVING flags also keeps the current view, just like the KEEPVIEW flag...
...but anyway I see you're trying to set the fovmin/fovmax using a
multiple-variable-tween, that might be better in this case,
but the syntax is wrong:
tween(view.fovmin, view.fovmax, 70|110, 1.5, easeinoutquad);
here correct:
tween(view.fovmin|view.fovmax, 70|110, 1.5, easeinoutquad);