Editing the installedPacks file cleared my mod list

[Ryaurezh]

I tried to install a custom offline modpack, and added it to the installedpacks file.  Now I get an error saying that it is unable to load the file, so it wipes it clean and none of the mods I have installed are listed.  I didn't make a backup of the original file, but I did reconstruct it based on the original mods I had installed and it does the same thing.

How can I 1) restore my mods without reinstalling them, and 2) add a custom modpack to the launcher without uploading it?

[Munaus]

do you own a legit copy of Minecraft?

[Ryaurezh]

Yes, I do.  In typical "Ryaurezh" fashion, the problem practically sorted itself out AFTER I posted my question.

I decided to try hitting the "Install" button for the mods.  Fortunately, the launcher detected them, so it didn't need to redownload.  Then I went back into the installedpacks file, and entered the information for my custom pack.  Somehow, it worked just fine that time.