Welcome to the forum
I doubt about going backward from Version 2012 to 2010
You may have to create a new one in 2010
I'm pretty sure John is right. In the future I would recommend creating your templates, sheet formats, library parts, etc. in the oldest version of SolidWorks that you will be using. Then you can always use them with newer versions, but you can't use files created or saved by a newer version in an older one (with limited exceptions).
Xuefeng, to extend what John and Glenn said, SolidWorks is not backward compatible. You can't save model or drawing files for use in an earlier version of SolidWorks. For that reason, it's not practical to have have users with different versions of SolidWorks working on the same project.
If your engineering director doesn't know this, you should tell them right away.
Thanks for the help. It is a very useful guidance for us. Hope to get your help in the furture!
Save the Sheet Format as a DXF and re-import to the older version of SolidWorks (oops) SOLIDWORKS and create a new template.
Thanks Kevin. Had a go of it. When save the Sheet Format to DFX then re-open under older version, it did not contain any thing, just ablank sheet. But use the same method to save the drawing template/drawing to DFX then re-open under older version, I got a mixed results:
(1) DFX from SW 2012 resumed almost everything, except the logo.
(2) DFX from Solid Edge resumed everything including the logo.
I am not sue the problem of DFX from SW 2012 was because the preferenc when exporting. May have a trial on it.
So at least we can have a drawing template to work with now.
Thanks everyone for your help!