Hi Oq,
Thank you for using Syncfusion products.
It is possible to open a document, edit it and save it locally in the computer. Opening an existing document and saving it to the computer locally is achieved by using the following code snippet.
[C#]
document = new WordDocument();
Here is the sample program for your reference.
http://websamples.syncfusion.com/samples/DocIO.Windows/F-65121/main.htmRegarding saving back to the server can you explain the issue in detail which will be more helpful for us to investigate further in this issue.
Regards,
Sarath