Thank you for asking this question in the support community. I believe at the time of this post, you may need to add a carriage return before the do write command in the config. push (the push config. feature in MSP is already in configuration mode, thus the do is needed for the write command). Another option is to leave the configuration area completely blank, and then check the "Save config before" or "Save config after" checkbox. I hope that makes sense, but please do not hesitate to reply to this post if you have any additional information or questions. I will be happy to help in any way I can.
You were totally right.
It is simply a carriage return and do write mem.
I was just typing in write mem.
Thanks for your help!