Module trying to upload empty fields?

When i enable the field in one content type, when i goes to the "manage upload fields" admin menu i can see another vido processing... exept there is no vido uploaded in this node.
This node was created before the node whith the video,"video upload" module was not enabled when i have created this node.
If i have lots of content type with the video field enabled i can see a (random) node trying to be processed.
I have tested this module whith some behaviors but this issue i reported seems to make no difference ,it's happen when my tests are successful or not(seems to have problems with cron job runing while a file is uploading but this is another issue)