Missing images after migration

I migrate wordpress from shared host to Amazon web service. I use wordpress defaul tools to import all post, page and media. Most of the things have been done properly except some missing images.

There is no way to move these missing images to the new server.

Default import tool can not import them.

I download the whole uploads folder and overwrite to the new server using FileZilla, all the images have been uploaded except these missing images, they are still not uploaded! FileZilla says “could not start transfer”.

Then I compress the whole uploads folder to uploads.zip and upload it to the new host. After that I use SSH command unzip and choose to overwrite all the exist files. The missing files are still not written to the new server.

I checked and the folder permission is 775. ALl the same images are processed without any issue. The missing images are just normal images. They are not different from any other images, except I can not write them to the new server in any way I have tried.

THis is very strange.