Currently, when importing find/replace files with multiple items, say 100,000, it takes a lot of time to load and it may become unresponsive. I suspect this may be partly due to the fact that each item gets a check box to include or not in the batch job. For imports with over a certain number of items, say 1,000, having the check box is quite unnecessary as no one would scroll through all these items to enable or disable.
Also, when the job is done, removing those entries, also takes a lot of time.
So, I recommend automatically disabling the include/exclude option over a certain amount of items imported, so as to speed up the import and make all relevant operations faster and smoother. Does that make sense?