Is there any way to move all my rules from version 3 to 4? ???
You can import your configuration. Go to More-> Manage My Configurations. Then select the profile you are using, and click “Import”. Then install V4 and export your rules.
But I recommend that you don’t use your V3 rules with V4, since it may slow down CIS. This is because it is in a slightly different format.
It is possible but you end up loosing functionality. You won’t get newly added protected file and folders and registry.
My idea would be to screenshots of your most important rules, policies etc and step in with v5 (skip v4 all together). The release of v5 is scheduled for September 14.