you can find the relevant text in the Immigration law. You can't lose the active contact with the country for three years. Practically, it means a visit. However, if you use your Paraguayan resident status for tax planning, then you have to maintain a residential address and at least get a RUC. Now, normally nothing happens if you don't visit Paraguay for three years. However, the new border system shows the date of your last visit and now you can lose easily your permanent resident status. More and more residents are losing their status every year.
This is the relevant part of the law: "5) Cuando injustificadamente permanecieran fuera del
territorio nacional por un lapso superior a tres a帽os, salvo la
pr贸rroga prevista en el Art铆culo 24; y, " (Ley migraciones 978, Capitulo 5, art 34/5)
Where did you get that ten days OffshoreResearch???????????