diff --git a/lib/layouts/stdinsets.inc b/lib/layouts/stdinsets.inc
index 989e67e197..a638c32473 100644
--- a/lib/layouts/stdinsets.inc
+++ b/lib/layouts/stdinsets.inc
@@ -206,8 +206,8 @@ InsetLayout Index
 	  Size                Small
 	EndFont
 	MultiPar              false
-#	CustomPars            false
-#	ForcePlain            true
+	CustomPars            false
+	ForcePlain            true
 	NeedProtect           true
 End
 
@@ -270,7 +270,7 @@ InsetLayout OptArg
 	  Color               collapsable
 	  Size                Small
 	EndFont
-#	MultiPar              false
+	MultiPar              false
 End
 
 InsetLayout Info
diff --git a/src/insets/InsetCollapsable.h b/src/insets/InsetCollapsable.h
index 5b7b91f580..0375387bcd 100644
--- a/src/insets/InsetCollapsable.h
+++ b/src/insets/InsetCollapsable.h
@@ -180,6 +180,12 @@ private:
 	///
 	Dimension dimensionCollapsed(BufferView const & bv) const;
 	///
+	/// should paragraphs be forced to use the empty layout?
+	virtual bool forcePlainLayout(idx_type = 0) const 
+		{ return getLayout().forcePlainLayout(); }
+	/// should the user be allowed to customize alignment, etc.?
+	virtual bool allowParagraphCustomization(idx_type = 0) const 
+		{ return getLayout().allowParagraphCustomization(); }
 	docstring labelstring_;
 	///
 	mutable Box button_dim;
diff --git a/src/insets/InsetERT.h b/src/insets/InsetERT.h
index 2fbfa8669d..ed010c5d8c 100644
--- a/src/insets/InsetERT.h
+++ b/src/insets/InsetERT.h
@@ -60,10 +60,6 @@ private:
 	void validate(LaTeXFeatures &) const {}
 	///
 	bool showInsetDialog(BufferView *) const;
-	///
-	virtual bool forcePlainLayout(idx_type = 0) const { return true; }
-	///
-	virtual bool allowParagraphCustomization(idx_type = 0) const { return false; }
 	/// should paragraph indendation be omitted in any case?
 	bool neverIndent() const { return true; }
 	///
diff --git a/src/insets/InsetFlex.h b/src/insets/InsetFlex.h
index a8c96db659..4b70aba2aa 100644
--- a/src/insets/InsetFlex.h
+++ b/src/insets/InsetFlex.h
@@ -47,18 +47,6 @@ protected:
 
 private:
 	Inset * clone() const { return new InsetFlex(*this); }
-	// FIXME The following two routines should be moved to InsetCollapsable.
-	// That will allow the redeclarations of these routines to be removed
-	// from its subclasses, such as InsetERT. But it will also require us
-	// to rework stdinsets.inc, to make sure we get the right behavior from
-	// the subclasses.
-	/// should paragraphs be forced to use the empty layout?
-	virtual bool forcePlainLayout(idx_type = 0) const 
-		{ return getLayout().forcePlainLayout(); }
-	/// should the user be allowed to customize alignment, etc.?
-	virtual bool allowParagraphCustomization(idx_type = 0) const 
-		{ return getLayout().allowParagraphCustomization(); }
-
 	///
 	std::string name_;
 };
diff --git a/src/insets/InsetIndex.h b/src/insets/InsetIndex.h
index 5f4492884f..092311c64c 100644
--- a/src/insets/InsetIndex.h
+++ b/src/insets/InsetIndex.h
@@ -40,10 +40,6 @@ private:
 	int latex(odocstream &, OutputParams const &) const;
 	/// should paragraph indendation be omitted in any case?
 	bool neverIndent() const { return true; }
-	/// should paragraphs be forced to use the empty layout?
-	virtual bool forcePlainLayout(idx_type = 0) const { return true; }
-	/// should the user be allowed to customize alignment, etc.?
-	virtual bool allowParagraphCustomization(idx_type = 0) const { return false; }
 	///
 	void addToToc(DocIterator const &);
 	///
diff --git a/src/insets/InsetOptArg.h b/src/insets/InsetOptArg.h
index 20867f299a..6e8d2d3d65 100644
--- a/src/insets/InsetOptArg.h
+++ b/src/insets/InsetOptArg.h
@@ -39,19 +39,14 @@ private:
 	docstring name() const { return from_ascii("OptArg"); }
 	/// return an message upon editing
 	docstring editMessage() const;
-
 	/// Standard LaTeX output -- short-circuited
 	int latex(odocstream &, OutputParams const &) const;
 	/// Standard plain text output -- short-circuited
 	int plaintext(odocstream &, OutputParams const &) const;
 	/// Standard DocBook output -- short-circuited
 	int docbook(odocstream &, OutputParams const &) const;
-	///
-	virtual bool forcePlainLayout(idx_type = 0) const { return true; }
-
 	/// Write out to the .lyx file
 	void write(std::ostream & os) const;
-
 	/// should paragraph indendation be ommitted in any case?
 	bool neverIndent() const { return true; }
 	///