C# 从其他word文档复制的图片为空

我生成一个SSRS报告，并将其另存为Word文档。该文档包含图片（图表为平面图像）。 我并没有真正保存Word文档，而是在内存中打开了它

然后我使用OpenXML创建另一个word文档，其中我需要复制SSRS报告中的图片

我试图从ssrs报告中获取图纸，并将其插入到新word文档中

MainDocumentPart ssrsMainPart = ssrsDoc.MainDocumentPart;
var drawings = ssrsMainPart.Document.Descendants<Drawing>().ToList();

但在那之后，我再也无法用Word 365打开文档，Word报告文档已损坏

MainDocumentPart mainPart = wordDoc.MainDocumentPart;
Body body = mainPart.Document.Body;

for (int i = 0; i < 10; i++)
{
    if (i < drawings.Count())
    {
        var myDrawing = drawings.Skip(i).First();
        myDrawing.Remove();
        body.Append(myDrawing); 
        body.Append(new Paragraph());
    }
}

foreach (var e in ssrsDoc.MainDocumentPart.Document.Body.Elements())
{
    var clonedElement = e.CloneNode(true);
    clonedElement.Descendants<DocumentFormat.OpenXml.Drawing.Blip>().ToList().ForEach(blip =>
    {
        var newRelation = wordDoc.CopyImage(blip.Embed, ssrsDoc);
        blip.Embed = newRelation;
    });
    clonedElement.Descendants<DocumentFormat.OpenXml.Vml.ImageData>().ToList().ForEach(imageData =>
    {
        var newRelation = wordDoc.CopyImage(imageData.RelationshipId, ssrsDoc);
        imageData.RelationshipId = newRelation;
    });
    wordDoc.MainDocumentPart.Document.Body.AppendChild(clonedElement);
}

public static string CopyImage(this WordprocessingDocument newDoc, string relId, WordprocessingDocument org)
{
    var p = org.MainDocumentPart.GetPartById(relId) as ImagePart;
    var newPart = newDoc.MainDocumentPart.AddPart(p);
    newPart.FeedData(p.GetStream());
    return newDoc.MainDocumentPart.GetIdOfPart(newPart);
}