For my regular savings plan for the month of Jan 2015, I made 2 transactions on Monday.
1) I sold all my 800 units of Nikko STI ETF at $3.36
2) I bought 900 units of STI ETF at $3.36

On Monday, the lot size as reduced from 1000 to 100 units. This allows me to buy STI ETF as part of my rsp from now on. The 2 transactions are meant to convert my existing Nikko STI ETF to STI ETF. I have always preferred the STI ETF as it has a higher trade volume and lower expense ratio (cost).

Going forward, I will buy 100 units of STI ETF every month instead.

A summary of my current units are as follows:

Counter Total Cost Total Units Average cost Last Done Unrealized
Profit/ Loss
Unrealized
Gain / Loss %
Realized Profit /
Loss / Dividend
STI ETF 6,290.12 1900 $3.31 $3.40 $169.88 2.70% $45.00
Nikko STI ETF 0.00 0 $0.00 $3.39 $0.00 0.00% $114.15

Details of all transactions for my rsp are logged here:
 http://madstranger.blogspot.sg/2013/07/nikko-sti-etf.html