When combine multiple pdf files, the inserted fields (added by javascript in Acrobat) are missing, how to solve?

[nissansz]

When combine multiple pdf files, the inserted fields (added by javascript in Acrobat) are missing, how to solve?

b_reduced+header.pdf
a_reduced+header.pdf
c_reduced+header.pdf

Code tried:
method 1:

def merge_pdfs(folder_path, output_path):
# 创建一个新的 PDF 文档
merged_document = fitz.open()

# 遍历指定文件夹中的所有文件
for filename in os.listdir(folder_path):
    if filename.endswith(".pdf") and "header" in filename:
        pdf_path = os.path.join(folder_path, filename)
        print(f"Merging: {pdf_path}")

        # 打开当前 PDF 文档
        current_document = fitz.open(pdf_path)

        # 将当前文档的所有页面添加到合并文档
        for page_num in range(len(current_document)):
            page = current_document[page_num]

            # 在合并文档中创建一个新页面
            new_page = merged_document.new_page(width=page.rect.width, height=page.rect.height)

            # 复制当前页面的内容到新页面
            new_page.show_pdf_page(new_page.rect, current_document, page_num)

        current_document.close()

# 保存合并后的文档
merged_document.save(output_path)
merged_document.close()
print(f"Merged PDF saved to: {output_path}")

method 2:
def merge_pdfs(folder_path, output_path):
# 创建一个新的 PDF 文档
merged_document = fitz.open()

# 遍历指定文件夹中的所有文件
for filename in os.listdir(folder_path):
    if filename.endswith(".pdf") and "header" in filename:
        pdf_path = os.path.join(folder_path, filename)
        print(f"Merging: {pdf_path}")
        # 打开当前 PDF 文档
        current_document = fitz.open(pdf_path)
        # 将当前文档的页添加到合并文档
        merged_document.insert_pdf(current_document)

# 保存合并后的文档
merged_document.save(output_path)
merged_document.close()
print(f"Merged PDF saved to: {output_path}")

[JorjMcKie]

This cannot be solved in any way!
Lookup docu about Document.bake() on how to convert annotation/fields to permanent content before merging. There will be no fields in the output technically however.