Issue 56048

The custom animation (CA) list box could use a couple enhanments.

1. When selecting an object in the edit window its item in the CA list box is
usefully hi-lited. But it would be also useful if we select an item in the CA
list box that the corresponding object in the edit window also becomes
auto-selected. This does not happen and makes it a tedious to identify the
object required.

2. When selecting an object in the edit window the its item in the CA list box
is usefully hi-lited, but very often this is out of sight in the list box. So
this means tedious scolling to find it. It would be useful to have the item
automatically shift in to view in the list box when the object in the edit
window is selected. 

3. When using the  the [Change order] arrows to shift a CA item to a new
position, again the item needs to remain visibly tracked in the the list box
window so that we can see where it going. Currently it can be out of sight and
we have no way of knowing where it is in the order as we move it. This means
tedious scrolling to bring it up in the list box and to guess how many clicks
are required to get it into to the indended place.