Highlight the appropriate clip in the project panel and select Edit Original if it was made in Illustrator or Photoshop. In the application that made the arrow, delete the arrow. Or tell the person who included the arrow to delete the arrow, and reimport the document into AE.
Find a layer that has the arrow draw a mask around the one you want to keep.
i WOULD EDIT Original (PSD)in Photoshop. >Save and return to AEFX,
Thank you for your help.Although it didnt help me with finding the right answer i would like to thank you.
I have found the problem,so i will share the answer.After Effects hides some of the Layers for some reason.So i had to unhide them by clicking a button to unhide all Layers.