I do this a lot. My laptop is from 2008. I keep both the laptop and main DAW up to date with CCC.
I don't use a lot of 3rd party plugs so both machines will load and play without issue. 
It is one reason I like Sonar, the ability to run on 2 machines. And tank goodness we get 2 copies of AD2. 
 
 
Songs are in project folders. And often the songs are in an album folder. The album or project folder is dated 
"Joe 04-08 2017"  
So all I need to do is copy the song or the album folder from machine to machine  and re date them to keep track. Way simple. 
 I have the 2 exact copies of the project on each machine. 
 
 
 
 
So it's like this: 
 
Once I have a good bed track for the song I save it to my main DAW.
I immediately "save as"   to a external dive putting it in a pre made "album" folder ( with date)  
Or I might copy paste the folder directly using Explorer. 
From the External drive it is copied to the laptop. 
I then go on location to the guest artists studio/ home and we record their part(s)
I re date the folder and copy it back to the external drive.
There will now be 2 versions on the external dive , great for back up redundancy.
Copy this new folder back to my main DAW and now I work with the new updated version,
Because there is back ups on the external drive and the laptop I can safely delete the original version, or you could keep them and file them in a back up drive out of harms way.  your choice. 
 
 

As a point of general consideration, I've also always had a studio tower and a laptop on the side but I find that recently, I've hardly turned on the tower at all. My new laptop has a desktop i7 6700 in it, 16GB RAM (space for 64 but I didn't see the need so far) and 4 disks (2x M2 SATA and two regular 2.5inch disks). It also has Thunderbolt, 4x USB3, two display ports and a HDMI port. Just to say that having a one-stop solution is more in reach than ever. I find it hard to think of anything I could do with a desktop that I couldn't do with this laptop (for my purposes). While a laptop isn't necessarily the most cost effective solution, it comes a lot closer when you don't need a tower at all anymore. And it obviously saves a lot of hassle with updates and maintenance, let alone copying stuff back and forth.

Sanderxpander

Doesn't your computer get hot and run a noisy fan? Just curious.

This is why I avoid an over powered laptop.

No it doesn't, really. I have to admit it's a pretty big and heavy laptop, this would probably be an issue for really compact high powered models. But the cooling on mine is designed to deal with a GeForce 980 in addition to an i7 6700K and since I have a non K and the videocard isn't really stressed by Sonar it's pretty quiet. If I turn the fans to max manually it's definitely loud, they just don't need to work that hard with just the i7.