L2 Stamping with L1B / L2 Extension approved but not stamped

[sharmaparas]

Hi,

I am on L1B with extension approved till Mid-2015 and my family (wife and son) on L2 extension approved till the same end date.

I have not got stamped again since the extension and have existing VISA expired as of mid 2013.
All of us are currently in US and my family (only wife and son) is visiting INDIA next month, i wanted to know if they would face any problem in getting their L2 visa stamped based on approved extension with me (primary) having visa stamped but only extension approved?

Please reply urgently.

Thanks.
Paras