Cannot find a Lookup column within my Editor when using IF/Then/Else

I have a Lookup Column labeled “L: FPDD - Scheduled” in my Glide Editor. I want to include it in an IF/Then/Else column (titled "IFT - 1=DoNotUseScheduledDate:) within the same editor. However, I cannot find this particular column when I use the drop down menu within my IF/Then/Else.
Does anybody have any idea on why that might be?
Screenshots are included.

Screen Shot 2020-08-31 at 4.30.02 PM Screen Shot 2020-08-31 at 4.34.12 PM


Your relation must NOT be multiple to get this my friend!


The same is happening with the lookups.