diyoyo I haven't check yet whether everything else was ok, but I have a Warning icon saying: "You should add graphic element to the current area to help Sozi keep track of this layer...".
What does that mean?
Sozi keeps track of certain graphic elements to decide whether a layer should be moved automatically.
For instance, I usually outline my frames with rectangles. If I edit the SVG document and move a rectangle and all of its content, I want Sozi to use the new location of the rectangle for the corresponding frame.
For each frame and each layer, Sozi chooses an SVG graphic element (e.g. a rectangle) that will be used as an "anchor". If it cannot find such an element, it will show a warning.
Text elements are not used as "anchors" because of a bug that makes their location unreliable.
Ignoring the warning is generally safe but it can sometimes have unexpected effects.