# Contact/Lead-Id

**URL:** <https://forum.mautic.org/t/contact-lead-id/7599>\
**Category:** General Discussion\
**Created:** [February 20, 2017, 8:37am UTC](https://forum.mautic.org/t/contact-lead-id/7599 "2017-02-20T08:37:50Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![markus\_k](https://avatars.discourse-cdn.com/v4/letter/m/a183cd/32.png) [@markus\_k](https://forum.mautic.org/u/markus_k)\
**Post date:** [February 20, 2017, 8:37am UTC](https://forum.mautic.org/t/contact-lead-id/7599/1 "2017-02-20T08:37:50Z")

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Hi guys,  
  
  
  
since Mautic 2.6 the Contact-Id is changing after a contact deletes the browser cache and then he sends a form with his Email.  
  
  
  
I can’t find this behaviour in the Change Log (maybe it’s there but i don’t see it).  
  
  
  
Can anyone tell me if this is a new feature or could it change again?  
  
  
  
I ask because my plugin is working with the lead id, now I would have to change a lot.

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<div class="post-metadata">

**Author:** ![markus\_k](https://avatars.discourse-cdn.com/v4/letter/m/a183cd/32.png) [@markus\_k](https://forum.mautic.org/u/markus_k)\
**Post date:** [February 20, 2017, 8:37am UTC](https://forum.mautic.org/t/contact-lead-id/7599/2 "2017-02-20T08:37:50Z")

</div>

Hi guys,

since Mautic 2.6 the Contact-Id is changing after a contact deletes the browser cache and then he sends a form with his Email.

I can’t find this behaviour in the Change Log (maybe it’s there but i don’t see it).

Can anyone tell me if this is a new feature or could it change again?

I ask because my plugin is working with the lead id, now I would have to change a lot.