Regenerate images doesn't apply any watermark on old images

[EPICURUS]

Hi!

I have a problem, regenerate images doesn't apply watermark on old images. I need to watermark only large_default and thickbox_default images. I regenerate images selecting large_default and thickbox_default only but watermark applied only on new images. 

I use PrestaShop v1.6.0.9 and watermark v1.0.3. I don't use default theme.

Any solution?    Τhanks in advance.

Edited July 29, 2015 by EPICURUS (see edit history)

[EPICURUS]

Images regeneration removes watermark from old images. I have 2000 products and my shop is locked now... PLEASE any HELP would be appreciated!!

[EPICURUS]

I use watermark module v1.0.3 I select image types for watermark protection: large_default (458 x 458) and thickbox_default (800 x 800).

I regenarate images seleting only Products and thickbox_default format.

It regenarates successfully the files but without watermark applied.

Edited August 1, 2015 by EPICURUS (see edit history)

[mobilebarn]

i have the same issue and i DO use the default theme. i was lucky enough to notice before adding to many products so just had to delete about 10 product photos and re-upload for the watermark to apply. i feel for you having over 2000 photos!

[EPICURUS]

I turn off Erase previous images and now is OK