#### Promotions Versioning

When a promotion is changed, its old version is saved and if there are any subscriptions a promotions was applied to before a promotion properties were changed, these subscriptions keep using the old version of a promotion. Thus, any changes made to promotions do not affect subscriptions a promotion is applied to. When you edit a promotion, you simply create a new version of it.

Old versions of promotions cannot be changed. They can be deleted only.

It is possible to see, if there are subscriptions exist an old version of promotion is applied to. If no subscriptions use a promotion old version, you can delete such version.

To view the versions of a promotion:

1. Open the Billing Director submenu on the Navigation tree and select Discount Manager.
2. Click Promotions on the Discount Manager submenu. The list of promotions appears on the screen.
3. Click on a promotion title. A promotion details appear on the screen.
4. Click the Versions tab. The list of previous versions of the promotion you have selected appears. Click on a promotion version title to see details:

- To see if there are any subscriptions that use the promotion older version, click on the Subscriptions tab.
- To remove a promotion version, click the Delete button.

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