Issue with loading existing signature, making changes, and then saving

[samslmmr]

I am able to load a previous signature into the component using

this.sigPad = new SignaturePad(canvas);
this.sigPad.fromDataURL("datastring");

My previous signature loads and then I can continue editing / adding to it. However, when my save button is clicked and I use
this.sigPad.toSVG();
or
this.sigPad.toDataURL("image/svg+xml")
I only get the edits I made. I do not get the complete image.

How do I get the previous signature and the edits?

[UziTech]

fromDataURL just loads the image onto the canvas. There is no data loaded from the previous signature.

If you want to save a previous signature and reload the data you will need to save it with toData and load it back with fromData.