Moving lines without fanthom lines

[Boscoverde]

Hi,

I worked  with Flash before. Now with animate I have a small issue.

When I draw a shape with the pen tool and I want to move a point with the sub-selection tool

there is a doubling of the line as it is moved. Is there a setting to prevent this?

I just want to see my line moving without seeing where it was before.

Thanks.