Replication question

I'm trying to figure out an easy way to merge data from one table on a database to another table.

What's happening is two different applications, normal user and accounting, competing for access to a single table. What I want to do is have the normal user application write to a different table and at the end of the night update the original table with any data that has been entered throughout the day.

I know I can schedule a task with SQL Server Agent to run a query with something like:

insert into tableA (select * from tableB)
delete from tableB

I'm just wondering if there is an easier or more robust way of doing this?