---
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title: Does Updating to the New Version of Einstein Engagement Frequency Remove My Old Data?
collection: admin
version: current
locale: en-us
portal_url: https://docs.salesforce.com/admin/current/en-us/mktg/264-0-0/mc_anb_eef_faq_2.md
canonical_url: https://help.salesforce.com/s/articleView?id=mktg.mc_anb_eef_faq_2.htm&release=264.0.0&type=5
source_site: help.salesforce.com
content_type: documentation
content_hash: 26a326da0cb5d1afddc7e6e44e551fc1630b548932ec86c326a05d202533359b
description: Yes. Updating the app removes older data used by Einstein Engagement Frequency. Specifically, the two data extensions populated by Einstein Engagement Frequency, called Einstein_MC_EMAIL_Frequency_Undersaturation and Einstein_MC_Email_Frequency_Oversaturation, are deleted. No other data extensions are deleted or modified.
products:
  - Marketing
  - Marketing Cloud Intelligence
release: "264"
---
# Does Updating to the New Version of Einstein Engagement Frequency Remove My Old Data?

Yes. Updating the app removes older data used by Einstein Engagement Frequency. Specifically, the two data extensions populated by Einstein Engagement Frequency, called Einstein\_MC\_EMAIL\_Frequency\_Undersaturation and Einstein\_MC\_Email\_Frequency\_Oversaturation, are deleted. No other data extensions are deleted or modified.

#### See Also

- [Activate Einstein Engagement Frequency](https://help.salesforce.com/s/articleView?id=mktg.mc_anb_eef_activate.htm&release=264.0.0&type=5 "Activate Einstein Engagement Frequency (EEF) at the MID level for your account. The activation process can take up to 72 hours to complete. Provision Journey Builder before you use Einstein Engagement Frequency. To use EEF for MobilePush, first provision Journey Builder and create at least one mobile app.")