MNG with alpha transparency

[glennrp]

I have some PNGs with (alpha) transparency (0.png, 1.png, 2.png) that I convert to MNG with
convert -delay 100 0.png 1.png 2.png a.mng
and
convert -delay 100 0.png -delay 200 1.png 2.png b.mng

When I animate a.mng, each frame replaces the previous one.
With animate b.mng however, each new frame is combined with the previous ones (which is not what I want).

Is there a way to use different delays for frames and still have new frames replace previous frames?

(my ImageMagick version is 6.2.4)

Try

• convert -delay 100 -dispose 2 0.png -delay 200 1.png 2.png b.mng