GEODIRECTORY plugin change file name of the jpg file

Hi ,

I just bought membership package yesterday.

I import 800 over post with images.
After import image displayed properly.

I turn on below plugins
a)advance search
b)multi location
c)gd booster
f)payment manager
g)ajx duplicate
h)multi review
i)re-cap

But after that , I found some of my post are not correct.
I delete all the post.
Correct the csv file and re-import again.

This time , all the image are not able to display.

When I look at upload folder , refer the attached file, the images file names are changed.
And the number of images file are reduce half about 2700. I have over 4000 images.But the disk space in the server is not reduced.

Right now , all my post are not able to display the images properly.

I need help here how to recover the images file or how to solve this so that my post are able to display image properly.

I don’t want to re-upload one more time as I have limited disk space in my hosting. It requires about 600 M for 4000 over images.

If I need to re-upload to fix this , I need to know where to delete the old files as I need to cleanup the disk space to make room for another upload.

Best Regards,
YC