I have just finished the migration on my site. However in many categories the products display out of template layout. Why; Any solution please;
Thanks a lot.
Sounds like you have a problem with your Joomla template, but without knowing Joomla/VM versions and the URL nobody is really going to be able to help.
I use JOOMLA 2.5 and Virtuemart 2.6.2. the image below shows how product displays
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That is not default VM as you are showing add to cart code on the category page. Suggest you use Firebug to sort it out. http://forum.virtuemart.net/index.php?topic=116620.0