Duplicating flowed text and diagram connector does not preserve the connection

[uellue]

Version Inkscape 0.91 r13725 Win7 64 bit

How to reproduce:
- Create two boxes and two texts
- Flow the texts into the boxes
- Connect the two boxes with a diagram connector (see appended sample file)
- Select everything and duplicate with Ctrl+d

Observed behavior:
- The selected objects are duplicated, but their connection is not duplicated
- Moving any of the duplicated boxes does not move the flowed text or the diagram connector.
- Copying and pasting, however, preserves the connection

Expected behavior:
- The duplication process also duplicates the connection between objects
- Moving a duplicate of a box moves the duplicated flowed text and the duplicated diagram connector
- Duplicating gives the same connection as copy & paste

Workaround:
- Use Copy & Paste in case of flowed text and/or diagram connectors

[jazzynico (jazzynico)]

Reproduced on Windows XP, Inkscape 0.48.5, 0.91 and trunk rev. 14023.

[Brynn (brynn4inks-deactivatedaccount)]

I see this problem happens with flowed text into frame alone. No Connectors used.

Inkscape 0.92.2, 64-bit, 7z package, Windows 7 Pro, 64-bit

I would like to request an option so that flowed text can be re-linked to both duplicated or cloned flowed text. And this is both for regular flowed text (text into its own text frame) and text flowed into a shape or closed path.

Thank you very much :-)