Substitute with Pretérito perfecto

Question

It seems to me that in many cases we could substitute the imperfect with perfect. The main difference would be that in the former we talk about a repeated activity and in the latter about whether something ever took place or a few times at the most.

Answer

Hola Emanuel
Yes, you could use El Perfecto in lots of these sentences, especially the ones with no time markers, for example in these two:

Sofía iba de Madrid a Jaén.
Sofía was going/ used to go from Madrid to Jaen.
Sofía ha ido de Madrid a Jaén.
Sofía went from Madrid to Jaen.

On this last sentence using El Perfecto, this is talking about either a specific journey that Sofía did at some point in the past without specifying when exactly or simply a sentence explaining part of her trip, again without specyfing on when. 
Saludos
Inma