A reader of this blog has posted several questions and here is my reply.
Since the question involves Tirumala Tirupathi Divyadesam, let me take some time to explain some of the temple practices. Panchamurthi or Pancha Bera Vidhana Aradhanam is followed in Tirumala. What this means in layman terms is that 5 different idols of Sri Venkateswara Perumal are worshiped .
- The first is Moolavar or Moola Beram which is Sri Venkateswara Perumal. This is the only deity which is unremovable from the Garbagraham.
- Second is the Kautuka Beram who is Sri Bhoga Srinivasa Moorthi
- Third is the Utsava Beram or Utsavar, Sri Malayappa Swamy
- Fourth is the Snapana Beram , Sri Ugra Srinivasa Moorthi
- And fifth is the Bali Beram, Sri Koluvu Srinivasa Moorthi
Apart from these 5 deities that I have mentioned, there are other deities like Sri Ramar Parivaaram, Krishnan, Garudan, Visvasehanan which used during special utsavams. However Utsavar- Sri Malayappa Swamy (With Sri Devi and Bhu Devi) is the one who presides over all the utsavams in Tirumala.
Here is a picture of Tirumala Utsavar Sri Malayappa Swami (Picture A). The insignia that HE wears is very unique. None of the other 106 divyadesam Utsavar has a Thiruman Kaapu like his.

- Picture A – Tirumala Utsavar Sri Malayappa Swami
Picture B – The idol of Sri Srinivasa Perumal used by TTD to conduct Srinivasa Thirukalyanam in various parts of India like Chennai, Bangalore, etc.

Picture C – This is the Idol of Sri Srinivasa Perumal that was brought to Singapore for the Srinivasa Thirukalyanam by TTD.
From the above pictures, you can see that the Sri Srinivasa Perumal deity (together with Sri Devi & Bhu Devi) that was used for the Thirukalyanam in India (Chennai, Bangalore, etc) was not the one that came to Singapore. And it is certanly not the Tirumala Malayappa Swami utsavar of Tirupathi. There is no way anyone can dispute this after seeing these pictures.
I hope I have answered your questions.
Narayana Narayana!