Answers.Body: <p>I think this is nothing to do with the checksum (other than that causes the right contact to load) but is an issue with webform-civicrm overwriting existing info in the membership table.</p>
  
  <p>Pretty sure this is an issue with the webform_civicrm code. Have raised <a href="https://www.drupal.org/node/2852365" rel="nofollow noreferrer">here</a></p>
  
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2017-02-14T04:00:01.543Z
Answers.LastActivityDate: 2017-02-14T04:16:09.737Z
Answers.LastEditDate: 2017-02-14T04:16:09.737Z
Answers.UserDisplayName: petednz - fuzion
Body: <p>We've starting using checksum in civimail for membership renewals. The checksum link takes the user to a webform in which they can renew. </p>
  
  <p>When they do renew the membership is being recorded as a new membership wiping out the member since date.</p>
  
  <p>For example, one person has been a member since 2010. Now it reads 2016. </p>
  
  <p>Anyone know why this is happening.</p>
  
  <p>Thanks,
  Andy
  CIVICRM 4.5.8
  Drupal 7
  We've updated webforms and webforms-civicrm to latest version</p>
  
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2016-10-11T15:14:29.490Z
Comments.Text: might need to add what version of wf and wf-civi you are on
Comments.UserDisplayName: petednz - fuzion
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2016-10-12T08:10:51.147Z
Comments.Text: thanks, we're using the latest version of those two modules
Comments.UserDisplayName: A Davidson
Tags: <civimember><webform-civicrm><checksum>
Title: Checksum wiping out member since date!
ThreadText: # Checksum wiping out member since date!
  
  (Asked by: username_0 on 2016-10-11)
  
  We've starting using checksum in civimail for membership renewals. The checksum link takes the user to a webform in which they can renew.
  
  When they do renew the membership is being recorded as a new membership wiping out the member since date.
  
  For example, one person has been a member since 2010. Now it reads 2016.
  
  Anyone know why this is happening.
  
  Thanks,
  Andy
  CIVICRM 4.5.8
  Drupal 7
  We've updated webforms and webforms-civicrm to latest version
  
  **Tags:** civimember, webform-civicrm, checksum
  
  > **Comments:**
  > **username_1**: might need to add what version of wf and wf-civi you are on  
  > **username_0**: thanks, we're using the latest version of those two modules  
  
  ---
  
  ## 1 answers
  
  ### Answer by username_1 on 2017-02-14. Score: 1
  
  I think this is nothing to do with the checksum (other than that causes the right contact to load) but is an issue with webform-civicrm overwriting existing info in the membership table.
  
  Pretty sure this is an issue with the webform\_civicrm code. Have raised [here](https://www.drupal.org/node/2852365)
  
  
  ---
  
  