diff --git a/Detectors/Raw/TFReaderDD/src/TFReaderSpec.cxx b/Detectors/Raw/TFReaderDD/src/TFReaderSpec.cxx
index f4cd64377034e..2b8090af42648 100644
--- a/Detectors/Raw/TFReaderDD/src/TFReaderSpec.cxx
+++ b/Detectors/Raw/TFReaderDD/src/TFReaderSpec.cxx
@@ -87,7 +87,8 @@ class TFReaderSpec : public o2f::Task
   std::map<int, std::vector<std::pair<long, long>>> mRunTimeRanges;
   o2::utils::IRFrameSelector mIRFrameSelector; // optional IR frames selector
   int mConvRunTimeRangesToOrbits = -1;         // not defined yet
-  int mTFCounter = 0;
+  int mSentTFCounter = 0;
+  int mAccTFCounter = 0;
   int mTFBuilderCounter = 0;
   int mNWaits = 0;
   int mTFLength = 32;
@@ -159,15 +160,15 @@ void TFReaderSpec::run(o2f::ProcessingContext& ctx)
       }
       if (hd->splitPayloadIndex == 0) { // check the 1st one only
         auto& entry = this->mSeenOutputMap[{hd->dataDescription.str, hd->dataOrigin.str}];
-        if (entry.count != this->mTFCounter) {
+        if (entry.count != this->mSentTFCounter) {
           if (verbose && hdPrev) { // report previous partition size
             LOGP(info, "Block:{} {}/{} with size {}", nblocks, hdPrev->dataOrigin.as<std::string>(), hdPrev->dataDescription.as<std::string>(), dsize);
           }
           dsizeTot += dsize;
           dsize = 0;
-          entry.count = this->mTFCounter; // acknowledge identifier seen in the data
+          entry.count = this->mSentTFCounter; // acknowledge identifier seen in the data
           LOG(debug) << "Found a part " << ip << " of " << np << " | " << hd->dataOrigin.as<std::string>() << "/" << hd->dataDescription.as<std::string>()
-                     << "/" << hd->subSpecification << " part " << hd->splitPayloadIndex << " of " << hd->splitPayloadParts << " for TF " << this->mTFCounter;
+                     << "/" << hd->subSpecification << " part " << hd->splitPayloadIndex << " of " << hd->splitPayloadParts << " for TF " << this->mSentTFCounter;
           nblocks++;
         }
       }
@@ -219,11 +220,11 @@ void TFReaderSpec::run(o2f::ProcessingContext& ctx)
     const auto* hd0 = o2h::get<o2h::DataHeader*>(dataptr);
     const auto* dph = o2h::get<o2f::DataProcessingHeader*>(dataptr);
     for (auto& out : this->mSeenOutputMap) {
-      if (out.second.count == this->mTFCounter) { // was seen in the data
+      if (out.second.count == this->mSentTFCounter) { // was seen in the data
         continue;
       }
       LOG(debug) << "Adding dummy output for " << out.first.dataOrigin.as<std::string>() << "/" << out.first.dataDescription.as<std::string>()
-                 << "/" << out.second.defSubSpec << " for TF " << this->mTFCounter;
+                 << "/" << out.second.defSubSpec << " for TF " << this->mSentTFCounter;
       o2h::DataHeader outHeader(out.first.dataDescription, out.first.dataOrigin, out.second.defSubSpec, 0);
       outHeader.payloadSerializationMethod = o2h::gSerializationMethodNone;
       outHeader.firstTForbit = hd0->firstTForbit;
@@ -270,7 +271,7 @@ void TFReaderSpec::run(o2f::ProcessingContext& ctx)
 
       auto tNow = std::chrono::time_point_cast<std::chrono::microseconds>(std::chrono::system_clock::now()).time_since_epoch().count();
       auto tDiff = tNow - tLastTF;
-      if (mTFCounter && tDiff < mInput.delay_us) {
+      if (mSentTFCounter && tDiff < mInput.delay_us) {
         std::this_thread::sleep_for(std::chrono::microseconds((size_t)(mInput.delay_us - tDiff))); // respect requested delay before sending
       }
       for (auto& msgIt : *tfPtr.get()) {
@@ -285,9 +286,9 @@ void TFReaderSpec::run(o2f::ProcessingContext& ctx)
       //        however this is a small enough hack for now.
       ctx.services().get<o2f::MessageContext>().fakeDispatch();
       tNow = std::chrono::time_point_cast<std::chrono::microseconds>(std::chrono::system_clock::now()).time_since_epoch().count();
-      LOGP(info, "Sent TF {} of size {} with {} parts, {:.4f} s elapsed from previous TF., WaitSending={}", mTFCounter, dataSize, nparts, mTFCounter ? double(tNow - tLastTF) * 1e-6 : 0., mWaitSendingLast);
+      LOGP(info, "Sent TF {} of size {} with {} parts, {:.4f} s elapsed from previous TF., WaitSending={}", mSentTFCounter, dataSize, nparts, mSentTFCounter ? double(tNow - tLastTF) * 1e-6 : 0., mWaitSendingLast);
       tLastTF = tNow;
-      ++mTFCounter;
+      ++mSentTFCounter;
 
       while (mTFQueue.size() == 0 && mWaitSendingLast) {
         usleep(10000);
@@ -300,7 +301,7 @@ void TFReaderSpec::run(o2f::ProcessingContext& ctx)
     }
     //    usleep(5000); // wait 5ms for new TF to be built
   }
-  if (mTFCounter >= mInput.maxTFs || (!mTFQueue.size() && !mRunning)) { // done
+  if (mSentTFCounter >= mInput.maxTFs || (!mTFQueue.size() && !mRunning)) { // done
     stopProcessing(ctx);
   }
 }
@@ -325,7 +326,7 @@ void TFReaderSpec::stopProcessing(o2f::ProcessingContext& ctx)
     return;
   }
   stopDone = true;
-  LOGP(info, "{} TFs in {}  loops were sent, spent {:.2} s in {} data waiting states", mTFCounter, mFileFetcher->getNLoops(), 1e-6 * mTotalWaitTime, mNWaits);
+  LOGP(info, "{} TFs in {}  loops were sent, spent {:.2} s in {} data waiting states", mSentTFCounter, mFileFetcher->getNLoops(), 1e-6 * mTotalWaitTime, mNWaits);
   mRunning = false;
   if (mFileFetcher) {
     mFileFetcher->stop();
@@ -420,7 +421,7 @@ void TFReaderSpec::TFBuilder()
           std::this_thread::sleep_for(sleepTime);
           continue;
         }
-        auto tf = reader.read(mDevice, mOutputRoutes, mInput.rawChannelConfig, mSelIDEntry, mInput.sup0xccdb, mInput.verbosity);
+        auto tf = reader.read(mDevice, mOutputRoutes, mInput.rawChannelConfig, mAccTFCounter, mInput.sup0xccdb, mInput.verbosity);
         bool acceptTF = true;
         if (tf) {
           if (mRunTimeRanges.size()) {
@@ -443,21 +444,23 @@ void TFReaderSpec::TFBuilder()
           locID++;
           if (!mInput.tfIDs.empty() && acceptTF) {
             acceptTF = false;
+            while ((mInput.tfIDs[mSelIDEntry] < mTFBuilderCounter) && (mSelIDEntry + 1) < mInput.tfIDs.size()) {
+              mSelIDEntry++;
+            }
+            LOGP(info, "chec if mInput.tfIDs[{}]({}) == {}", mSelIDEntry, mInput.tfIDs[mSelIDEntry], mTFBuilderCounter);
             if (mInput.tfIDs[mSelIDEntry] == mTFBuilderCounter) {
               mWaitSendingLast = false;
               acceptTF = true;
               LOGP(info, "Retrieved TF#{} will be pushed as slice {} following user request", mTFBuilderCounter, mSelIDEntry);
-              mSelIDEntry++;
             } else {
               LOGP(info, "Retrieved TF#{} will be discared following user request", mTFBuilderCounter);
             }
-          } else {
-            mSelIDEntry++;
           }
           mTFBuilderCounter++;
         }
         if (mRunning && tf) {
           if (acceptTF) {
+            mAccTFCounter++;
             mWaitSendingLast = true;
             mTFQueue.push(std::move(tf));
           }