Change Custom-field name don't apply on front-end!

[zagrox]

When changing some custom field name it will apply on back-end and you can see the new changed name  in product details panel.
but after visiting the fornt-end the new name for the field does not showing and its still the old name.
the only solution that we found its a necessary action to open each product pages in panel and save the products again to apply & showing the new custom field name on front-end.

Example: Define the new string with parent named X, after changing the X on custom field to Y, the website is showing the X not Y, and it need to open the each product and save again to apply the new name on frontpage.

[Jumbo!]

That's may be a Cache issue. Please clear the cache of your site and check. If you have enabled System Cache Plugin in your site  then please disable it and check.

[zagrox]

All the system cache plugins was disabled, also we did clear all the cache items.!!!! 
Is there any sql command to update all the products with new changes?

[Jumbo!]

Have your tried the Repair & Optimize option at phpMyAdmin?