• First of all. Copy the actions so if you mess up, you can always go back to them.
• To do this, open PhotoShop,  hold the option key (on a a mac) and drag the actions in your action palette, somewhere just below. The new actions will say (subject-copy) in the title.
• Open up one of the actions you’d like to test this on. You’ll have to amend one of the actions. You’ll need to add ‘flatten’ file into each action you want to use.
• To do this, open up any file, run the action, wait for it to finish, and then at the bottom of the action palette , click the red ‘begin recording’  and then click the last order in the open action. Whatever you press now, will be recorded as an action. Go to ‘layer’ in the top PS menu, scroll down to ‘flatten’ image. Then click the red recording button to stop the action. All you’ve done is added an additional step to flatten the image. Close up the action and run a test image again. Close.
• Then, highlighting the action you want to create a droplet. To do this, click file in PS, scroll down to ‘automate’,  ‘droplet’.  Choose where you want to store the droplet. It could be on your desktop for example.
• In the destination, choose a location other than the original folder. I created a folder named ‘Post TIFF files’.  Click suppress color profile warning. Close/Save.
• Now, go to lightroom, click the export in the menu bar. Click ‘add’ and  ‘user presets’, name it the same as the action your running. Choose your file settings, tiff for example. Open ‘post processing’ at the bottom, click in the ‘after export’, then click ‘Go to export action folder now’. 
• Drag the droplet you made earlier to the export action folder. Then back in LR, click on the droplet in the ‘after export’.
• Check the photos in your new export folder. A droplet can be made with any action. To save as a jpeg, you must edit the droplet and use the ‘save as’ command. If saving as a tiff, this is not necessary.

Hope this helps to clarify a few things. If you have comments, please add them below to help others.