fix elements visibility

GUI/View/Import/Legacy1dDialog.cpp

@@ -52,6 +52,7 @@ Legacy1dDialog::Legacy1dDialog()
 
     auto from_sR = new QLabel("from  column"); // this one can be made invisible
     gridLayout->addWidget(from_sR, 2, 2);
+    from_sR->setVisible(Msettings.col_sR != 0);
 
     auto sb_Q = new QSpinBox;
     gridLayout->addWidget(sb_Q, 0, 3);
@@ -67,6 +68,7 @@ Legacy1dDialog::Legacy1dDialog()
 
     auto sb_sR = new QSpinBox;
     gridLayout->addWidget(sb_sR, 2, 3);
+    sb_sR->setVisible(Msettings.col_sR != 0);
     sb_sR->setMinimum(1);
     sb_sR->setValue(Msettings.col_sR);
     connect(sb_sR, &QSpinBox::valueChanged, [&p = Msettings](int i) { p.col_sR = i; });
@@ -74,10 +76,10 @@ Legacy1dDialog::Legacy1dDialog()
     connect(have_sR, &QCheckBox::stateChanged, [&p = Msettings, from_sR, sb_sR](int i) {
         from_sR->setVisible(i != 0);
         sb_sR->setVisible(i != 0);
-        if (i > 0)
-            sb_sR->setValue(p.col_R + 1);
-        else
+        if (i == 0)
             Msettings.col_sR = 0;
+        else
+            sb_sR->setValue(p.col_R + 1);
     });
 
     auto w21 = new QWidget;