[flexinode-image] manual migration

I need to migrate from an old mysql-based site and a new drupal site.
I have to manage an online catalogue and so I created a flexinode type with 4 text field and 1 image field.
I manual inserted all the record with a batch and I can see the text fields for all the new nodes but the image-field one doesn't display any image.
For the image-field I used a "drupal inserted" one.
This is the serialized-data field fro the image one.
O:8:"stdClass":7:{s:8:"filename";s:14:"deps010101.gif";s:8:"filepath";s:22:"files/deps010101.gif";s:8:"filemime";s:9:"image/gif";s:8:"filesize";s:4:"3616";s:6:"source";s:11:"flexinode_6";s:9:"smallpath";s:22:"files/deps010101.gif";s:9:"thumbpath";s:22:"files/deps010101_th.gif";}
I don't understand why the records are all similar but in the edit-node window under the image-path field I can't see any filename .
If I insert an example node (with drupal wizard) I can find under the file path the new image as image_name_1.
The "_1" means that drupal find the old image and upload the new one.
If I look the image field in mysql I can see that the record different only for the filename that have the "_1".
So I don't understand what to do.
I hope that someone can help me.

Sorry for my english and thanks to everyone can help me.