I second that. I exclusively use Hourglass 9 when I make and restore backups, just to keep myself from accidentally doing something stupid. I only use Decrypt9 for it's other functionalities like Cart dumping and it's ability to dump and restore other files.You should be using Hourglass9 instead. Hourglass9 explicitly never overwrites a9lh.
Someone should make a Decrypt9 that has the sysNAND restore feature removed - people already have both Decrypt9 and Hourglass9, so it wouldn't be too onerous to have the two payloads Hourglass9 and whatever the new name is they come up with.I second that. I exclusively use Hourglass 9 when I make and restore backups, just to keep myself from accidentally doing something stupid. I only use Decrypt9 for it's other functionalities like Cart dumping and it's ability to dump and restore other files.