As long as the older CD is for a version of Accordance that is 5.7 or higher, as I believe all these are, there is no problem installing them. Any CD for 5.7 or higher has a line of text in red letters in the Read me after the license information. If you see the red text you can go ahead and install the CD. If you do have an earlier CD than 5.7, do not run the installer. Often you can just copy the modules, but many CDs have upgrades available, please see the Install
No installer will put an earlier version of anything instead of a newer version.
The one issue that you may have after installing is the fonts, as these CDs may install an older fonts file (Accordance Fonts) in OS X, which corrupts the Greek and Hebrew inside Accordance. Simply run a 7.1 installer or the FontFixer
to correct the problem.