See my post right before your post to me. At http://alisondb.legislature.state.al.us/alison/codeofalabama/1975/11-46-53.htm it says the voting machines are to be sealed until the opportunity to file a contest is past. Setting the machines to delete the images doesn’t seem to fit that requirement, at all. Once the vote is done and the totals are retrieved from the machines, they are to be sealed.
Somewhere in all those laws it says that voting machines doesn’t include electronic voting, which is instead governed by Title 17 (which can be seen at https://law.justia.com/codes/alabama/2013/title-17/ ). But looking there, it seems like the same disposition exists for the electronic records as for paper ones: they must be sealed until the opportunity for a contest is past.