replacing picture naming issue

Hello.  I am also experiencing this issue.  However, Emma Brown's work around did not work for me.  I opened the renamed file in Photoshop and saved with a different filename.  Storyline 360 still imported it with the old filename.  In Photoshop, I even copied and pasted the image into a new .psd file and saved a new .png with yet another different filename.  Storyline 360 continues to import the picture using the old filename.  This is very frustrating, especially as I use different edited versions of the same picture and describe each difference in the filename.  With Storyline 360 displaying multiple edited versions of the same picture, using the same filename in the timeline, it's easy to see where this would be frustrating as it slows down my workflow!