Hey guys this is how to move over onto the new launcher and not have to download all the mods again, it's very easy!
Step 1: Open the old launcher and go to settings. Then look where is says Mods Path. Copy the text within the window to your clipboard.
Step 2: Download and launch the new launcher, it will ask you to check the settings as it will be the first time you have launched it. Go to settings which is in the top right shown here.
Step 3: Now you paste the text from the mods path of the old mod, into the new mods/Downloads path shown here.
And there you are guys if you followed all these step you shouldn't have to donwload any more mods when changing over to the great new browser.
I've just been told maca might be making a video to show this, but I'll post it anyway because I've already done it!