College Composition IC up to date? Does it matter?

[rackcity92]

There are two  sections in the instacert FC called "Citing sources part 1 and 2" for the college composition clep exam. 
It involves knowing the basic style formats for MLA, APA and CMS. 

My question is two fold. 

 Are the instacert FC current with the style formats latest editions? (and if so then)
 Is the college composition clep exam current with the style formats latest editions?

For example this is a citation style chart from 2018:   
https://owl.purdue.edu/owl/research_and_...nChart.pdf

and

this is one from 2012:
https://www.uni-hildesheim.de/media/fb3/...ue_edu.pdf

As you can see there are a variation of subtle changes from 2012 to the 2018.

It's possible I'm reading too much into this. That' why i would really appreciate some feedback, especially from individuals that have studied and taken the College Composition Clep.     

Thanks