Image with "Image styles" are not displaying after updating existing images fields

I have content type with multi image field and have some existing content for that content type also. i installed file field path and file aliases module and then i tried to update the existing images with it[choosing Retroactive update option] and after saving the image field[file path setting].Existing image with image style disappeared.

when i tried to copy the image location of the thumbnail of existing image in node edit form, it shows

http://styles/thumbnail/http/mysite.com/models/moto/defy.jpg

but when i tried to upload a new image in node edit form,it shows the thumbnail of that image in node edit form

image location of new image thumbnail :
http://mysite/sites/default/files/styles/thumbnail/public/EX211_Thistle_...

i think something broke the path of existing image of image style .can you tell me what may be the problem and how can i clear it?

Thanks in advance!...