Hi,
Yes. If you update all previous edits will lose.
You will have to use child theme to solve this problem if you don't want to worry about every time you update to the new version.
** Here's how you should do before updating the theme:
- Backup the theme, or at least the files you have edited.
- Update the new version
- There will be 2 options for you:
1. Continue to overwrite the backup file into the parent theme. (You will have to repeat the work each time you update the version)
2. Use Child theme (just update the file in case there is a new function update for that file.)
Best regards,
tb.