An enabled channel gets disabled whenever code is re-deployed.

[ricdev]

Hi, I'm encountering the following issue on admin/settings/sitemap:

1. 'Single pages' was created.
2. Went to admin/settings/sitemap and enabled the 'Single pages' channel.
3. Config was save, everything looks fine.
4. After a week, new fixes were deployed in the site.
5. Visited admin/settings/sitemap, 'Single pages' were disabled.
6. We've enabled it again, Config was save, everything looks fine.
7. After a week, new fixes were deployed in the site.

Old enable channels are still active, 'Single pages' channel is the only one that keeps reverting back to its disabled state.

I am are using version 1.3.2.

Please advise on what actions to take. Thank you!