There has been a community MP around for some time now that provides an automated mechanism for backing up your unsealed management packs in a SCOM management group. This was always a must have MP as a deleted management pack is not recoverable, so a backup copy of the management pack is your only failsafe.
The original version of this backup management pack was available on SystemCenterCentral, however it has now been updated by Kevin Holman at Microsoft as is now available on the TechNet Gallery for download and works for both SCOM 2012 and SCOM 2016.
For full details of the MP and usage instructions, visit Kevin’s blog post at https://blogs.technet.microsoft.com/kevinholman/2017/07/07/scom-2012-and-2016-unsealed-mp-backup/
To download the management pack, use this gallery link… https://gallery.technet.microsoft.com/SCOM-2012-and-2016-2ccc45c0
Go get it now and backup your management packs!