PNGs missing after saving file as XGML

Question

I am using the XGML file format to translate my flowcharts in SDL Trados. When I reopen the file after saving and closing it, all included PNGs are missing, only purple placeholders are shown. Is there any way to prevent this from happening?

Answer 1

Support for the XGML file format (and also its predecessor GML) in yEd is rather limited. Many of the things that are beyond the pure structure of a diagram are not supported. Saving PNGs (or JPGs for that matter) is one of them.
This is the reason why there is a warning presented to the user, whenever he/she wants to save to XGML or GML file format: "The selected file format may not store all information."

Note that with yEd's default file format GraphML there is no such limitation.