PAPERJS：导出然后导入SVG创建额外的数据（Clippath）

Question

我有一个图纸工具，需要能够导出，存储然后导入图纸。我正在使用以下代码进行导出：

const savedData = scope.project.exportSVG({
     asString: true,
     bounds: scope.view.bounds
});

以下是用于导入的代码：

scope.project.importSVG(savedData);

如果我绘制简单的行，请安装导入的内容（我刚刚绘制的行），并安装导出的内容，我应该得到相同的结果。取而代之的是我得到的：

导入：

<svg
  version="1.1"
  xmlns="http://www.w3.org/2000/svg"
  xmlns:xlink="http://www.w3.org/1999/xlink"
  width="1422"
  height="498"
  viewBox="0,0,1422,498"
>
  <g
    fill="none"
    fill-rule="nonzero"
    stroke="#990000"
    stroke-width="3"
    stroke-linecap="butt"
    stroke-linejoin="miter"
    stroke-miterlimit="10"
    stroke-dasharray=""
    stroke-dashoffset="0"
    font-family="none"
    font-weight="none"
    font-size="none"
    text-anchor="none"
    style="mix-blend-mode: normal"
  >
    <path
      d="M426,41l4,5l4,7l4,5l2,4l3,6l3,5l3,4l2,4l3,3l1,4l1,1l1,4l2,2l1,2l2,4l1,1l1,3l2,2l1,1v1"
      style="mix-blend-mode: destination-over"
    />
  </g>
</svg>

导出：

<svg
  version="1.1"
  xmlns="http://www.w3.org/2000/svg"
  xmlns:xlink="http://www.w3.org/1999/xlink"
  width="1422"
  height="498"
  viewBox="0,0,1422,498"
>
  <defs>
    <clipPath id="clip-1">
      <rect
        x="0"
        y="0"
        width="1422"
        height="498"
        stroke="none"
        stroke-width="1"
      />
    </clipPath>
  </defs>
  <g
    fill="none"
    fill-rule="nonzero"
    stroke="none"
    stroke-width="none"
    stroke-linecap="butt"
    stroke-linejoin="miter"
    stroke-miterlimit="10"
    stroke-dasharray=""
    stroke-dashoffset="0"
    font-family="none"
    font-weight="none"
    font-size="none"
    text-anchor="none"
    style="mix-blend-mode: normal"
  >
    <g clip-path="url(#clip-1)">
      <g stroke="#990000" stroke-width="3">
        <path
          d="M426,41l4,5l4,7l4,5l2,4l3,6l3,5l3,4l2,4l3,3l1,4l1,1l1,4l2,2l1,2l2,4l1,1l1,3l2,2l1,1v1"
        />
      </g>
    </g>
  </g>
</svg>

DEF和CLIPPATH在向加载的图纸中添加更多时会导致分层问题。为什么要以这种方式转换我的SVG？那个剪纸来自哪里？我缺少有财产吗？