credentials are being erased from credential manager via git credential-wincred erase command

Good afternoon,

My company setup wincred for management of our git/stash user credentials for our automated build scripts. It works great for days, sometimes a couple weeks. Then one day build haven't run and we discover the scripts are randomly found at a user prompt awaiting stash user credentials.

We look at Windows Credential Manager store in Windows and find the Stash user credentials are erased from Credential Manager! 

We discovered via GIT_TRACE, that the command used to retrieve the credentials, is being followed up by a git command to erase the credentials. -not all the time, but seemingly in a random way. Looking at the trace logs on one server, we see the following commands: 'git-remote-https' 'origin' https://stash-server/bla/bla/bla.git 'git-credential-wincred' 'get' 'git credential-wincred erase'

Do you have ideas on how to track down the root cause of why this command is running?  

Info: Windows 7 machines Git version 1.9.5-msysgit, and Git 2.7.4 windows (on one machine to see if upgrading helped) -it did not. Stash version 3.11.2

Please let me know if I can get any more information to help diagnose. Thanks, -Ken