Thumbnail cache

My main concern is which feature under automatic maintenance is responsible for deleting thumnail cache?  so i can uncheck it, also when i uncheck system junk which i think is the main culprit  responsible for deleting thumbnail cache it keeps rechecking it.

Hello despite my displeasure with the new AVG yesterday it did its own update and forced the new upgrade i cannot install the old as it wont allow, i liked the old as it had a feature that allowed me to find duplicate files, registry cleaner Now the new maintenance  keeps deleting my thumbnail cache running itself everyday the last one was set to run weekly no option to set weekly anymore, how do i stop this new upgrade from deleting my thumbnail cache.

Hello Blane,
We're glad to look into this and help you.
We would like to clarify that AVG TuneUp will not delete any files/cache without user's permission. We request you to manually uncheck the files/caches before start a scan.
We have updated and improved several features from the old version of AVG TuneUp (known as AVG PC TuneUp) and included them in the latest program version.
Certain features like duplicate file remover has been removed in the latest version based on user ratings and feedback received for earlier version.
Refer this article to know about the latest version.
However, we'd like to take this as your valuable feedback and pass it up to our developers.
Thank you.

Hello Blane,
We're glad to look into this and help you.
We would like to clarify that AVG TuneUp will not delete any files/cache without user's permission. We request you to manually uncheck the files/caches before start a scan.
We have updated and improved several features from the old version of AVG TuneUp (known as AVG PC TuneUp) and included them in the latest program version.
Certain features like duplicate file remover has been removed in the latest version based on user ratings and feedback received for earlier version.
Refer this article to know about the latest version.
However, we'd like to take this as your valuable feedback and pass it up to our developers.
Thank you.

Hello Blane, 
Appreciate your patience. 
We request you to get connected with our additional remote support. They will navigate through the options and help you further. 
We sent you an e-mail including instructions to reach our remote support. If the e-mail is not found in your inbox, do check your spam/junk folders as well.