We deleted the “Regular Price” at the source code.

[ErayS]

How can we re-install the „Regular Price“ which is displayed in the frontend?

We deleted the “Regular Price” at the source code.

Unfortunately Magento changes the wholesale prices (at Frontend!) and we don´t know why.

We suppose and hope, that this is because we deleted the regular price option.

That´s why we want to try to re-install and check.

[kab8609]

Do you have version controlled installed? You can just look at the history of the code changes and revert easily?

If not, I would say the next course of action is to put a clean copy of Magento over your code to change out any core rewrites you have done.

[Pronto]

Hmm .. it sounds like somebody changed core files?