Problem with external imported form fields in indesign file

[filipž43885858]

After importing an interactive form in .indesing format into an other InDesign file and then exporting it to a PDF file, the imported page lost form field. Does enybody solved this problem? 

I need import external page with working form fields and then export it in one .pdf file.

[BobLevine]

That's exactly how it works. When you place a PDF you get the artwork, not the interactivity. 

[Eugene Tyson]

As per @BobLevine placed files with interactivity don't retain the interactive'ness' 

You could find/submit a feature request here

https://indesign.uservoice.com/forums/601021-adobe-indesign-feature-requests

As for your current situation - maybe there's a solution - can you share what you're tyring to do/why and maybe there is a clever way to get what you need. 

Not promising anything, but hey we can take a look and perhaps find a solution.

[BobLevine]

The OP could try combining the files in Acrobat but without knowing more, it's impossible to give any advice.