Mysql experts: phpmyadmin backup, not sure if auto-increment OK?

Hi,

I just upgraded to 2.6.1 but had to run a lot of replace queries after realising the upgrade had changed a load of Spanish accents. Half way through I scrwed things up and had to delete the wp_posts table, and reinstall it from a backup I had made earlier.

Now, when I make backups with phpmyadmin, the following boxes are always checked:

add if not exists
add auto increment value
Enclose table and field names with backquotes

Everything worked after the backup, all posts looked OK, but will the fact the ‘add auto increment value’ was checked when I made the backup that I then restored into wp_posts cause any problems later on? The problem is I don’t know what it does!