Group Text question
How do you delete all the messages in a group text but not delete the group?
iPhone 5s, iOS 12
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Hi Mleverett,
Welcome to the Apple Community.
I may be wrong:
Seems there is no way to save groups of Contacts for texts on the iPhone
It can be done on iCloud though, and accessed on iPhone.
Apple support have articles online that may help:
Create and manage groups of contacts on iCloud.com
https://support.apple.com/en-au/guide/icloud/mmfba73c71/icloud
Use other contact accounts on iPhone:
Says:
"Use your iCloud contacts
Go to Settings 
> [your name] > iCloud, then turn on Contacts".
Complete article: https://support.apple.com/en-au/guide/iphone/iph14a87326/ios
"Send a message to a group or business on iPhone":
Says how to "name a group you want to use: (Sorry: Nothing about how to keep a group, after group texts are deleted.)
The photo used for group conversations includes all participants and changes based on who was recently active.
You can also assign a personalized photo to the group conversation.
Tap the name or number at the top of the conversation, select Change Name and Photo, then choose an option.
https://support.apple.com/en-au/guide/iphone/iph733450025/ios
"Delete messages on iPhone":
Says:
You can’t recover a deleted conversation.
https://support.apple.com/en-au/guide/iphone/iph2c9c4bfcb/ios
Hope something here will help you :-)