Merging vertices with modifiers

Hi, I’m trying to create this animated shape:

https://lh3.googleusercontent.com/62YVEt531vAXDUcYrAw1WeuMVc5GFgGGSQZMkDAyZmpTbh2SQNJ4L-dwSycQB-VYAFfQpEYM5Byr1ueXdMhqtsw_p2F9c0NCbqGKfoRB9T0JZgrCZS3swZxZil2q9e_9s7_sZFyVX5VGehbbgZkcCLWRK3N1AwxkcsGI0Y9YNu5LUm23FWazNl4JRUdjTW07tpDmfH3KW0SHwae90QMl8ffvDb_1R-wKhRrD_9Jk4gLpqSHd-_-R0Z9amaf2MvLGAm9SRVS1K-vOVBwX8NLkXi--BCeuLeubhj57N1ZWAGXS6JU4Gnh1bYxFxj1gaz3PZIDfqFkBRN4JjLAVvEpX7kB1d8kiWrsWH34XmYWwvtJDbvPPWcpD47sQPqJBuO-ng9_o8X2SgfDj9iAn9AEe4nbhLDdFM1NknIG_UweX8MCosFr2pfC32iU7yJf4Vb1uMebd7U8eUBibZAwSVfadChDOHbKQxvKWOgbgIhBYmjehmMtR2IfBN3VTGDST3YIFjHrwAhzw7o3wqKsrJyEMPHonzAalOp6ETyYfp4m0xYCW0sMAwZIWU4PAXYSIOU9_NoeTkZNdQ6ramADUh2F3kVnnjVoxbUBDdlcmJ7HBt6Jn_ZgX=w640-h360-no

This is accomplished with a plane, displace modifiers, and curve modifiers. It’s working fine, but the seams are fairly obvious. What I need is a way to connect the vertices after the curves, but before the displacement. This is impossible, as you can see by my modifier order.

Any suggestions on how I could do this?

as far as i know, you cant. not without some external script or plugin. however, if you are using a displacement map to deform the plain, then i believe making that texture seamless will solve your problem.

lets have a look at the blend file.

good call, tiled texture should work. Here is the file
https://drive.google.com/file/d/0B3eTdFzJAp1JX21yMzFCRi1rbXc/view?usp=sharing

https://i.gyazo.com/f8fd6ad432cd8acb3b9ff8e785849968.gif
using a seamless image works indeed.