Reclassification where target/source does not equal trigger?

Question

A challenge for reclassification, allocation or other BCS functionality:
Requirement:
Where two accounts net to either an asset or a liability, then the accounts that show the opposite sign to the net result must be reclassified to asset or liability.
Example:
Load from Data Stream:
Acct 1000 (asset) = +$1000
Acct 2000 (liability) = -$500
Net result = +$500 (asset)
-This is a positive number, therefore Acct 2000 (liability) value must be reclassified to Acct 1000 (asset):
and vice versa
Desired BCS reclasification:
Acct 1000 (asset) = -$500
Acct 2000 (liability) = +$500
BCS data after reclassification:
Acct 1000 (asset) = +$500
Acct 2000 (liability) = 0
Net result = +$500 (asset)
Standard reclassification
Standard Reclassifications don't seem to work because the source/target is always equal to the trigger (unless you add a percentage, which would not help this requirement)
Two steps would be required:
step 1. the trigger condition that the sum of both Acct 1000 and Acct 2000 = >0
Source is Acct 2000
Target is Acct 1000
but how do we reclassify only the Acct 1000 value NOT the whole amount?
step 2 would be the opposite:  the trigger condition that the sum of both Acct 1000 and Acct 2000 <0
Source is Acct 1000
Target is Acct 2000
Again, how do we reclassify only the Act 2000 value?
Allocations
Allocation functionality contains a few options but I can't see any that would succeed:
- A specific fixed distribution wouldn't help because the values will change each period
- A distribution by ratio of existing results (usually used to allocate eg costs by proportion of sales) doesn't seem helpful either
Next steps
There might be some combination of (one-sided) reclassifications to statistical accounts, which then become a condition for a subsequent reclassificition or allocation but I haven't got anywhere.
Any suggestions?

Answer 1

Thansk Marsy, here it is here:
Dr/Cr Sign-triggered Reclassification
I hadn't realised (due to not having used it before) that once selected, the condition selections can be independent of the trigger selections.
Looks like this should give me what I need:
Example 1:
Load from Data Stream:
Acct 1000 (asset) = +$1000
Acct 2000 (liability) = -$500
Net result = +$500 (asset)
-This is a positive number, therefore Acct 2000 (liability) value must be reclassified to Acct 1000 (asset)
Example 2
Load from Data Stream:
Acct 1000 (asset) = +$1000
Acct 2000 (liability) = -$1500
Net result = -$500 (liability)
-This is a negative number, therefore Acct 1000 (asset) value must be reclassified to Acct 2000 (liability)
BCS reclassification setup (step 1 - net result is an asset)
Trigger = Accounts 2000
Condition = Acct 1000+2000 >0
Source = Acct 2000
Target = Acct 1000
BCS reclassification setup (step 2 - net result is a liability)
Trigger = Accounts 1000
Condition = Acct 1000+2000 <0
Source = Acct 1000
Target = Acct 2000
BCS data after reclassification - example 1:
Acct 1000 (asset) = +$500
Acct 2000 (liability) = $0
Net result = +$500 (asset)
BCS data after reclassification - example 2:
Acct 1000 (asset) = $0
Acct 2000 (liability) = -$500
Net result = -$500 (liability)