“Migrate Theme Settings” whats this?

Hello All:

I hope someone can answer this for me. After doing some updates, backups and house cleaning I noticed the following where “Editor” should be in “Appearance”:

“Migrate Theme Settings”
It gives me two options:

“Import settings from the parent theme

Use this tool to migrate your existing settings from the parent theme to your child theme.

Note that in doing this, your database will be modified. Any existing settings that have already been configured for the current theme will be overwritten.

I have backed up my database. (How?)”
and

“Restore previous theme settings

Use this tool to restore settings that were previously overwritten when importing parent theme settings.

Note that in doing this, your database will be modified. Any existing settings that have already been configured for the current theme will be overwritten.

I have backed up my database. (How?)”

Can anyone give me a clue as to what to choose? I have made extensive modifications to my child theme over the past two years and I would hate to lose all of them.

*Note: I have backed up my database and content, you can never have too many…

Thank you!

s