Bug that overwrites "(Collection)" field content with zeroes

I tried using Sims 4 Studio 3.1.5.8 for applying color shift to eyecolor (this is possible, I've done this via HEX editor):

1. Created empty package
2. Imported .householdbinary from my Tray folder
3. Found field I was interested in
4. Changed value corresponding to eyecolor
5. Exported .householdbinary back to Tray
6. Saw abomination in CAS
7. Found out that all color_shift items, let alone eyecolor related one, turned to 0

The same applies to body_parts and parts/ids fileds.