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Dear List, 
I installed version 7 into a directory named 'freesurfer' where there are already Verion 6 and Version 7(beta) is installed. 
My OS is 'Ubuntu_FS_600_700b1_TutorialData'
"/usr/local/freesurfer/6.0.0-1"
"/usr/local/freesurfer/7.0.0-0.1b1"

So I installed Version 7 (stable) in the same directory
  "/usr/local/freesurfer/"
but when I export my necessities
$export FREESURFER_HOME=/usr/local/freesurfer
$export SUBJECTS_DIR=/usr/local/freesurfer/subjects    
$source $FREESURFER_HOME/SetUpFreeSurfer.sh
-------- freesurfer-linux-centos7_x86_64-7.0.0-20200429-3a03ebd --------
Setting up environment for FreeSurfer/FS-FAST (and FSL)
FREESURFER_HOME   /usr/local/freesurfer
FSFAST_HOME       /usr/local/freesurfer/6.0.0-1/fsfast
FSF_OUTPUT_FORMAT nii.gz
SUBJECTS_DIR      /usr/local/freesurfer/subjects
TUTORIAL_DATA     /home/developer/tutorial_data
MNI_DIR           /usr/local/freesurfer/6.0.0-1/mni
FSL_DIR           /usr/local/freesurfer/6.0.0-1/fsl_507

Although, I checked the creation dates of files from the mismatching directories in both versions, there is no update in the latest version, so it should not be a problem, however I wonder, why are some variables still pointing toward the old version? 
any solution,please? 

Regards, 

Safi