applied?, not sure I understand the question, but:
Multiple invoices can be imported in one batch. you will keep repeating the Level1 and Level 4 records after the first level0 (batch) record. Import the batch with a status of H (Hold). This will allow you to review & edit the batch as needed.
Since the batch is on Hold, you can update the batch control total as needed.
Here is a sample data file for AR Invoice import:
Batch,,201411,H,,,,,,,,
Invoice,IN,N2288,Customer1,1/31/2014,14585,Initialized doc,,,,,3/2/2014
Transaction,,120100,,,00000000,,,,14585,Initialized doc,
Invoice,IN,N2506,Customer2,9/30/2014,7500,Initialized doc,,,,,10/30/2014
Transaction,,120100,,,00000000,,,,7500,Initialized doc,
Invoice,IN,N2519,Customer3,10/31/2014,25000,Initialized doc,,,,,11/30/2014
Transaction,,120100,,,00000000,,,,25000,Initialized doc,
Invoice,IN,N2528,Customer4,10/31/2014,1400,Initialized doc,,,,,11/30/2014
Transaction,,120100,,,00000000,,,,1400,Initialized doc,
Invoice,IN,N2544,Customer5,11/30/2014,3875,Initialized doc,,,,,12/30/2014
Transaction,,120100,,,00000000,,,,3875,Initialized doc,
Invoice,IN,N2545,CORPONE,11/30/2014,12685,Initialized doc,,,,,12/30/2014
Transaction,,120100,,,00000000,,,,12685,Initialized doc,
Invoice,IN,N2549,Customer6,11/30/2014,4560,Initialized doc,,,,,12/30/2014
Transaction,,120100,,,00000000,,,,4560,Initialized doc,
Invoice,IN,N2550,Customer7,11/30/2014,6166.67,Initialized doc,,,,,12/30/2014
Transaction,,120100,,,00000000,,,,6166.67,Initialized doc,
Invoice,IN,N2552,Customer8,11/30/2014,20000,Initialized doc,,,,,12/30/2014
Transaction,,120100,,,00000000,,,,20000,Initialized doc,