Google Sheets Bulk Update HELP

What are you trying to achieve?

Hello fellow Makers, what sometimes seems so simple might drive you nuts… I want to copy entire column from one place to another. Copy P2:P250 to L2:L250.

Steps taken so far

In simple terms its just copy and leaving out the headers. But the problem is, once I paste it, it leaves out information out or places into different row. What’s causing it and how to solve it?

Screenshots: scenario setup, module configuration, errors