Thank you everyone, we have finally find the problem.   The developers added an autoexec.sas made by them that was included in the default autoexec_usermod so they could have some variables for their scripting, and we have an ENVIRONMENT variable defined differently in all of the environments. However, only in this particular environment, we had an ENVIRONMENT variable with a hyphen (PRE-PRODUCTION). That resulted in the added autoexec not recognizing it properly, which in turn modified the default OBS and REPLACE options (Don't know why, it just did).   We modified that new autoexec to recognize the hyphen in the ENVIRONMENT variable, and removed the line I added (explained at the start of the post), and the default options come as expected again without modifying them.   Thank you all for your answers and help, and I hope this post helps to anyone with the same problem (not probable, but who knows ).   Thank you!! ... View more