documentclass[12pt]{article}
usepackage[margin=1in]{geometry}
usepackage{catchfilebetweentags}
usepackage{wrapfig}
usepackage{graphicx}
CatchFileBetweenTags{SectionA}{content.tex}{SectionA}
CatchFileBetweenTags{SectionB}{content.tex}{SectionB}
begin{document}
section*{Section A}
SectionA
section*{Section B}
SectionB
end{document}

%<*SectionA>
text
%</SectionA>
%<*SectionB>
text
begin{wrapfigure}{r}{0.25linewidth}
  begin{center}
    includegraphics[width=linewidth]{./graphics/example.png}
  end{center}
  caption{Caption here.}
  label{example_wrap_figure}
end{wrapfigure}
text
text
%</SectionB>

%<*SectionA>
text
begin{wrapfigure}{r}{0.25linewidth}
  begin{center}
    includegraphics[width=linewidth]{./graphics/example.png}
  end{center}
  caption{Caption here.}
  label{example_wrap_figure}
end{wrapfigure}
%</SectionA>
%<*SectionB>
text
text
text
%</SectionB>

section*{Section A}
SectionA
begin{wrapfigure}{r}{0.25linewidth}
  begin{center}
    includegraphics[width=linewidth]{./graphics/example.png}
  end{center}
  caption{Caption here.}
  label{example_wrap_figure}
end{wrapfigure}
section*{Section B}
SectionB

section*{Section A}
SectionA
{
begin{wrapfigure}{r}{0.25linewidth}
  begin{center}
    includegraphics[width=linewidth]{./graphics/example.png}
  end{center}
  caption{Caption here.}
  label{example_wrap_figure}
end{wrapfigure}
}
section*{Section B}
SectionB