Clean Up Download Directories

My first post - And let me say - Many Thanks for creating and supporting such a helpful program...
I have had a look around the forum for information on missing / removed option box and cannot seem find the answer I am looking for. I really hope this has not already been answered, although I expect it has already been covered somewhere on here.
First time I have updated my wsusoffline program in just over a year [from v9.3.1 June 2014 to v9.7] and I notice there have been a few changes in the front end "Generator" options, we are now missing the "Clean up download directories" option box.
My client folder currently weighs in at 23GB worth of accumulated updates / fixes / patches etc, this would normally get a bit of a clean out every so often and the tick box would make this very easy to accomplish. With the option to clean up now gone / removed, how do we tidy up / clean up these directories of redundant patches, is there any other way to achieve this without starting from scratch and re-downloading gigabytes worth of patches again?
Another issue would be the gradual increasing ISO size due to possible inclusion of redundant files whilst compiling / creating ISO?
After downloading each of the last few archive wsusoffline zip files in turn, I see the clean up tick box was removed between version 9.42 and 9.51. Would I break anything in my directory structure if I temporarily replaced the UpdateGenerator.exe file with the one from v9.42 and ran the program with the "Clean up download directories" option box ticked or...
Is there another way to do this without swapping UpdateGenerator.exe files, are there plans to reintroduce this option in a future version?

I have had a look around the forum for information on missing / removed option box and cannot seem find the answer I am looking for. I really hope this has not already been answered, although I expect it has already been covered somewhere on here.
First time I have updated my wsusoffline program in just over a year [from v9.3.1 June 2014 to v9.7] and I notice there have been a few changes in the front end "Generator" options, we are now missing the "Clean up download directories" option box.
My client folder currently weighs in at 23GB worth of accumulated updates / fixes / patches etc, this would normally get a bit of a clean out every so often and the tick box would make this very easy to accomplish. With the option to clean up now gone / removed, how do we tidy up / clean up these directories of redundant patches, is there any other way to achieve this without starting from scratch and re-downloading gigabytes worth of patches again?
Another issue would be the gradual increasing ISO size due to possible inclusion of redundant files whilst compiling / creating ISO?
After downloading each of the last few archive wsusoffline zip files in turn, I see the clean up tick box was removed between version 9.42 and 9.51. Would I break anything in my directory structure if I temporarily replaced the UpdateGenerator.exe file with the one from v9.42 and ran the program with the "Clean up download directories" option box ticked or...
Is there another way to do this without swapping UpdateGenerator.exe files, are there plans to reintroduce this option in a future version?