Hi Pilou, one way to fill a hole is to remove surface trims.

Here are some steps on how to do that - this shows the steps for removing a hole in a cube:
http://moi3d.com/forum/index.php?webtag=MOI&msg=444.4

Here is a longer tutorial about removing holes on a more complex object:
http://moi3d.com/forum/index.php?webtag=MOI&msg=446.17


There will probably be another "fill in hole" tool at some point called N-Sided Patch. I might be able to do this one soon, I'm not quite sure yet.


Moving a hole can be pretty difficult, especially if there is stuff attached to it. It will be quite a while before I'll be able to work on this one, although probably this will get better with more history support, if you could control the history of how the hole was originally created. There should be more stuff for that in V2.

- Michael