Alice, if I were in your slippers I'd ignore them cos leaving them in the registry will not affect performance. That's safer and will avert future hassles and headaches. They're not worth the angst.
Why not simply add them to your Exclude list? ![:)]()

I was mainly referring to the many "Invalid Firewall Rules" files that have shown-up after the removal of the AOL. Are you saying to "ignore" all of there There are about 51? As I said, if I uncheck "Obsolete Software," all those Firewall items go away.
Here are just a few of them that were found on the Win 7 (64-Bit) computer after the new CC version was installed:
Missing Shared DLL C:\Windows\Downloaded Program Files\gp.ocx HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\SharedDlls
Unused File Extension . HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.
Unused File Extension .DIR HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.DIR
Unused File Extension .idx HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.idx
Unused registry key .INF\OpenWithList HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.INF\OpenWithList
Unused registry key .msc\OpenWithList HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.msc\OpenWithList
Unused registry key .msi\OpenWithList HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.msi\OpenWithList
Invalid or empty file class .shtml\OpenWithProgids\shtmlfile HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.shtml\OpenWithProgids
Unused registry key .URL\OpenWithList HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.URL\OpenWithList
Invalid firewall rule NetPres-In-TCP-NoScope - %SystemRoot%\system32\netproj.exe HKLM\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\FirewallRules
Invalid firewall rule NetPres-Out-TCP-NoScope - %SystemRoot%\system32\netproj.exe HKLM\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\FirewallRules
Invalid firewall rule NetPres-WSD-In-UDP - %SystemRoot%\system32\netproj.exe HKLM\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\FirewallRules
Invalid firewall rule NetPres-WSD-Out-UDP - %SystemRoot%\system32\netproj.exe HKLM\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\FirewallRules
Invalid firewall rule NetPres-In-TCP - %SystemRoot%\system32\netproj.exe HKLM\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\FirewallRules
Invalid firewall rule NetPres-Out-TCP - %SystemRoot%\system32\netproj.exe HKLM\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\FirewallRules
Invalid firewall rule {B16523A4-2023-4662-9D6F-ECD4EFA4055B} - C:\Program Files (x86)\Microsoft Office\Office12\ONENOTE.EXE HKLM\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\FirewallRules
Invalid firewall rule {C1537D4C-1010-400C-8156-8E8C5D26BF71} - C:\Program Files (x86)\Microsoft Office\Office12\ONENOTE.EXE HKLM\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\FirewallRules
Invalid firewall rule {8E58CB19-6942-4C86-A2C8-A828B9F9AFBE} - C:\Program Files (x86)\CyberLink\PowerCinema\PCMService.exe HKLM\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\FirewallRules
Invalid firewall rule {9FFF6C4F-EF11-4509-9981-8FD083197909} - C:\Program Files (x86)\CyberLink\PowerCinema\Kernel\DMP\CLBrowserEngine.exe HKLM\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\FirewallRules
Invalid firewall rule {D53308B0-758C-40C4-A869-401A6DF018FC} - C:\Program Files (x86)\CyberLink\PowerCinema\Kernel\DMS\CLMSService.exe HKLM\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\FirewallRules
Invalid firewall rule {7BA985F8-28F5-4E98-B274-57CCB2E414CE} - C:\Program Files (x86)\Common Files\aol\acs\AOLDial.exe HKLM\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\FirewallRules
Invalid firewall rule {CDB121BA-55CB-409E-84F7-2FE99D120DF0} - C:\Program Files (x86)\Common Files\aol\acs\AOLDial.exe HKLM\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\FirewallRules
Invalid firewall rule {7F6F1668-5E96-45A0-8D3F-334BAFCDA0D9} - C:\Program Files (x86)\Common Files\aol\acs\AOLacsd.exe HKLM\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\FirewallRules
Invalid firewall rule {3B2B4847-E41A-4A68-A737-98135A1FA2EB} - C:\Program Files (x86)\Common Files\aol\acs\AOLacsd.exe HKLM\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\FirewallRules