partially fix 49686

Author: lasconic

mscore/importgtp-gp4.cpp

@@ -790,8 +790,10 @@ void GuitarPro4::read(QFile* fp)
                               }
 
                         cr->setDuration(l);
-                        if (cr->type() == Element::Type::REST && (pause == 0 || l == measure->len()))
+                        if (cr->type() == Element::Type::REST && (pause == 0 || l == measure->len())) {
                               cr->setDurationType(TDuration::DurationType::V_MEASURE);
+                              cr->setDuration(measure->len());
+                              }
                         else
                               cr->setDurationType(d);
                         if(!segment->cr(track))

mscore/importgtp-gp5.cpp

@@ -239,8 +239,10 @@ int GuitarPro5::readBeat(int tick, int voice, Measure* measure, int staffIdx, Tu
                   }
 
             cr->setDuration(l);
-            if (cr->type() == Element::Type::REST && (pause == 0 || l == measure->len()))
+            if (cr->type() == Element::Type::REST && (pause == 0 || l == measure->len())) {
                   cr->setDurationType(TDuration::DurationType::V_MEASURE);
+                  cr->setDuration(measure->len());
+                  }
             else
                   cr->setDurationType(d);