I noticed something weird a few days ago, lol.
Step 1: extract refpackageitem.txt from an official server's Media.pk2
Step 2: copy the contents of your _RefPackageItem table to the .txt file that you have just extracted and save it.
Step 3: now make a new txt file and paste the contents of your _RefPackageItem table.
Step 4: compare the file sizes. The first file's size is twice as big as the second file's.
Can someone explain this? lol
Here's a pic: