Currently on wordpress 3.7.3. Using Quick Page Redirect Plugin 5.0.3.
We have added over 600 redirects and cannot add any more. When I try to add a new redirect it simply disappears instead of adding another line to the bottom of the list.
We have increased the memory to the highest limits for both the wp_memory_limit, the php post limits and execution time but it still won't work. .
We also located another possible work around which was also implemented with no success - http://wordpress.org/support/topic/quick-301-redirects-not-working-though-wordpress-interface
Problem is that we need to add another 600+ redirects (it was a big site and there was a mobile version as well) but we are stuck as we don't know what else could be causing this.