Hello,
I am using a similar iOS shortcut to the post "Drafts Record of Completed Reminders".
https://www.icloud.com/shortcuts/8796ec0284794cf9abb5f211f2acad72
- Asks you to specify certain date (defaluted to today, but you can change it)
- Exports title, memo and subtasks as plain text via iOS Sharing menu
- Can delete logged tasks
Format:
Tasks completed on 2019/02/17
* Test Task 1
Memo (1st line)
Memo (2nd line)
- Subtask1
- Subtask2
- Subtaks3
* Test Task 2
Memo (1st line)
Memo (2nd line)
- Subtask1
- Subtask2
- Subtaks3
===